Do it. I would've quite liked a second chance at the aerodrome sims at college (after having never seen anything like it before) alas this wasn't to be and was given the heave-ho. Except I knew I could do it and went the self funded route and don't regret it one bit as I'm now employed as an ATCO. It's a big risk if you actually can't do it though and find out after the second, more costly course, but that's life. I managed to pay it off after 2 years and it beats working with animals.