I work with a young man who just finished a year and a half at Wyotech, I'll ask him tomorrow if he can fill me in. There is a Wyotech campus right here in my town in the San Francisco area now. But he went to the one in Laramie Wyoming.
I have to say, you sound exactly as I did at 17, exactly. I got into autobody and paint working a few restoration shops and collision shops as well for a few years. At 23 I opened my own shop and kept that for 13 years before I got burnt out on it. I took a job as a paint rep for S-W (very interesting job) for five years and now I have been back doing body repair for the past five years.
If there is anything I could ever recommend, this is coming from a 45 year old (crap, I forgot, I turned 46 yesterday) guy who sounded EXACTLY like you at 17, GO TO COLLEGE.
You really need to take business courses so you have an understanding of what happens in the office. You will learn all the fab and repair stuff, that will happen. But if you don't get a good understanding of the business part of it, all you will ever be good for is the shop work.
Now, that isn't a bad thing, I love it. But as others have mentioned,you are not young forever and your body does break down over time. I certainly can't keep up with the young guys in the shop.
On that note, PROTECT YOURSELF always, I mean ALWAYS wear your protection. Eye, ear, lungs, hands, etc. Do it now, do it every time, don't ever slip up. You WILL Pay for it in later years. I have done pretty good, I slipped too much up until my early twenties. But since then I have been pretty diligent about and thank God. I have worked with guys who didn't protect themselves and they really,REALLY paid. I work with a guy who is so screwed, my God, he is dead man walking. And on top of it he has no idea about the business so he is destined to live out his life in the shop killing himself.
There is pretty good money to be made around here with $50,000 to $65,000 for the AVERAGE autobody or mechanical tech.
Don't worry so much about "career" choices at this point. Just learn something and do what you love, the "choice" will fall in your lap.