As for becoming a tec instructor, to my impression you other tec instructors do not think that a 4 month intensive internship is enough to begin teaching technical diving? If not, what do you recccomend?
As some others have mentioned, teaching technical diving isn't merely an extension of teaching recreational diving. It's hard to convey the difficulties you'll encounter until you've had a taste of technical diving at diver level.
The task loading with tech is immense. Most find it a significant challenge (at diver level)...and that includes 'seasoned rec instructors' when they first make the transition. The additional loading on a tech instructor is even more significant - it demands that all of the necessary skills, drills, protocols are ingrained to an entirely unconscious level - thus freeing up capacity for effective situational awareness needed to ensure personal and student safety, whilst allowing the relentless problem solving necessary to achieve very refined instructional goals with students.
One shouldn't assume that potential students will be clueless. That's a luxury only afforded in recreational instruction. Many technical diving students will have conducted extensive research and personal pre-study prior to enrollment. Many will be 'seasoned dive pros' themselves - or may have already accumulated decades of diving experience. A 'bluffer' (one who expects to teach directly from the manual with a limited breadth of supplementary knowledge and experience) will become apparent very rapidly. With technical diving, reputation and personal history is far more important than in recreational diving (where an 'anonymous' instructor can work in dive centers and suffer little professional impact from low-quality teaching). In technical diving, your name can become 'mud' very quickly in the circles that matter. A bad reputation takes a lot longer to clear, than establishing a good reputation in the first place (which is itself a very slow process).
Bag the internship, drop 1500 on a course that will give me 12 ow dives... or spend a bit more and get proper training. Sure I will walk away a DSAT instructor, but that sure doesn't mean I am going to be running around bending out people... I am hoping to EXPAND my possibilities as an instructor...
It sounds like you'll be getting a good deal/price on the internship. You also have a job offer in place. That deals with any issues of return-on-investment. One of the biggest concerns otherwise would be getting meaningful employment as a tech instructor following a zero-to-hero transition...
The biggest insights you'll gain will come from the training itself. Not just the course syllabus, but your opportunity to inter-act and observe your new peer group at both tech diver and tech instructor levels.
The best advice I can give is to keep your eyes open and
be brutally honest with yourself in how you compare with those peers. Also,
be brutally honest in self-evaluation of your true competency at tech diver and tech instructor level.
My own experience was that I remained at tech diver level for over 6 years before becoming a tech instructor. I was a qualified rec instructor throughout that time. I had also gained technical qualifications through several different agencies and instructors - it's good to have a wider breadth of understanding beyond the limits of a single agency program. Having then done the training, passed the evaluations and gained the plastic to be a technical diving instructor, I then
manually elected to remain as an assistant-only for several more years. I believed that gave me a very comprehensive foundation. Experience counted for much more than the plastic cards I held.
As an active technical instructor for several years, I see many differences between recreational and technical instructors. It is not uncommon for technical diving instructors to contact each-other and discuss students that are being 'passed on' from one instructor to another. The level of success, or failure, you have with a student will be immediately apparent to successor instructors. That's your reputation on the line. Word of failure, or low standards, gets out pretty quickly. Once out, it stays out. Plastic instructor-qualification cards are irrelevant; I am judged professionally on the basis of my students competency, the application of their skill-set, their mind-set and the level of expertise I can provide them with. I am happy to be judged that way - as should any self-respecting tech instructor.
Likewise, your former students will judge you based on their experiences once they enter the tech community and/or enroll on subsequent tech training with other instructors. Any short-comings in their training will be immediately and obviously apparent to them (not so with recreational divers). Personal reputation and word-of-mouth recommendations are a...no...
the.... critical marketing tool for a tech instructor. Do a bad job and you'll get professionally stagnant quickly....and stay stagnant a long time.
For sure, get the training. Put the cards in your wallet. However, remain realistic about your competency for both technical diving and technical instructing. Let your decision to teach reflect that realism, rather than financial or egotistical factors. That decision can have long-term impacts; both positive and negative for your subsequent career. Technical diving is a tough...and sometimes harshly critical and unforgiving... industry and community in which to succeed professionally as an instructor. It's an industry/community that thrives on perfectionism. Not many will be apologetic about that.
I really feel from some of the users on hear that they are the only ones suited to be tec instructors
You need to accept that, as it stands, you are an unknown entity as a technical diver, let alone a tech instructor. Not just for us, but for yourself. It's hard to be encouraging and supportive when such little is known. From those with experience, realistic advice can be a bitter pill. Don't view it as discouragement - but rather as a challenge.
The tech mindset is necessarily very different to that you've encountered in recreational diving... even as an experienced dive pro. Don't expect to commute any respect and credibility you earned as a recreational instructor into the tech community. It's time to put the 'noobie' hat on again... and talk of rapid progression to instructor-level has the same sort of impact as a yet-to-qualify OW student talking of how they'll become an instructor themselves 'in a few weeks'. I hope that makes sense and doesn't sound elitist... it's just a reflection of reality.