You can get this baby on the road for sure. :bigthumbsup ...I was about your age when I got my 65' Fastback. It was in worse shape than yours! Its been an adventure though.:smoke:
Your first priority, in my opinion, is to get the transmission and the brakes looked at. ..After that, a good once over of the engine and carb, etc...(you said it fires up, so that's good. Now get it tuned.). Assuming the tires are good, you'll be back on the road...Only then would I worry about the floorboards and the cosmetics (unless your feet are hitting the road like Fred Flinstone).... Thus starts the restoration journey! Trying to work and save money while balancing funds between trying to keep it running and fixing all the rust..awesome...:grinroll: ...
That said, judging by the front floorboards you can be pretty sure the cowl is toast. You never know though. Body looks good. Quarter panels and front fenders appear to be rust free? If the floorboards, rockers, and cowl are the main issues, you're ahead of where a lot of us have started!
Oh, and Use that auto-shop teacher/friend for as much work as you possibly can! ...The school springs for the parts, and you have free labor!... It'll just take some time.
Welcome to the sickness! :bounce2: