Jacobi,
I was turned onto scuba in my middle age life; wish I learned as a teen and had the advantage of taking my time.
My instructors consider me a fast tracker, at 45 I figure I have 5-8 years of Tech Diving left before I am over the hill and back to recreational limits.
A few things I have noticed about transitioning to the tech side:
1st and a major factor: Tech diving and training is expensive! Entry-level classes were in the $400 range and advance was in the $7-800 range per class. Gear (sets of doubles-40s,80s-lights-scooter
.) Thousands of $$$ as well as maintenance of your equipment. Let alone that a Tech dive is normally 2-3 times the cost of a rec dive when you consider charter costs and mix gases.
And then, of course you will want to get some overhead training, Cave classes will run you another $6-1500. The $10 thousand + figure is very realistic.
2nd More bottom time has penalties associated with it. Deco, Overhead, Task loading, Ascent rates, recognizing limits and having the maturity to obey those limits,
. freaking out here usually results in either pure luck, a chamber ride, or painful death.
3rd Finding teammates. Rec trips are almost always available, finding buddies for a tech trip are always more difficult to arrange. More than not this last year I had mix in my tanks, got blown out and was invited on a ~100 rec dive. It is hard to justify sucking down a $45 fill in a quarry or on a reef. I usually opted out of these dives, which I regret as rec dives are lots of
fun too.
Like others have said, you have plenty of time. Practice your skills and include stops just as you would during a deco dive. Bouyancy is a key skill for tech diving. Work on getting your sac rate down (it will save you a lot of $ and frustration) FIND A GOOD MENTOR
Tech diving requires lots of planning, start planning now so when your 18 you will have all your ducks in order to enjoy youre training and diving experiences.
Wish I was 16 yo aspiring tech diver!