If it is ok, a few more questions along the lines you have been discussing.....
1. What organizations/trainers are the most reputable and how would I discern between the cowboys and the real pros in the beginning?
As you progress into more advanced levels of diving effective research of potential instructors becomes a more critical factor. Use Google Search to establish some individual pedigree and get references and recommendations from others within that activity-specific community. Facebook also has a number of user groups relating to wreck/technical wreck diving. Having created a short-list - start communicating with them. Ask questions directly - this gauges both their experience, knowledge and expertise... and also their motivation to teach.
Beyond 'recreational' level courses (i.e. basic wreck)
I personally don't think that agencies have much bearing on potential quality of specialized/advanced diving. An individual instructor may have certain agency allegiances, but these can be shaped by market factors, or personal history, rather than course design.
First and foremost...
vet your instructor. Dive history (frequency/specialism/specificity to your needs/goals), participation in exploration/expeditions, community reputation and authority, training level, etc etc
Be prepared to travel, to get the best instructor you can,...
Article: The Anatomy of an Effective Wreck Course
2. With an admittedly lofty goal, how do I get taken seriously by said pros?
Identify realistic personal goals (
short/medium/long term) and communicate them. Ask intelligent questions, based on personal research in advance. LISTEN.
Prepare for training effectively - make sure you are at a high standard of competency as dictated by the prerequisite qualifications for the given course you will attend. You book on a course to progress ability, not to remediate deficiencies from previous levels of training.
3. Someone had mentioned getting used to a backplate setup earlier in the game. My initial training opportunities will be on the rec side, will this type of equipment put me in the kook category? Would I be I jumping the gun on gear?
Not at all. Backplate/Wing BCDs are relatively common now. As is sidemount...
4. As some of you appear to be some pretty heavy duty instructors, what progression would you send someone on if you were to model a quality student?
Crack an exceptional level of foundational skills - this is the bedrock from which you will build upon. Buoyancy, trim, propulsion, situational awareness, team skills, gas management, precision dive planning and conduct (plan the dive, dive the plan).
After each stage of training, allot a significant time to ingrain and embed the new skills, drills and procedures. Do not move forwards until sufficient practice and experience have made the stuff you've previously learned an instinctive operation.