i'm not sure how to vote on this so...
personally i would go to college, not a trade school type thing for equine massage or farrier training. mostly because i think you will benefit more from it. if you get into farrier stuff, and no longer want to do it, or have back problems or something, you would have nothing to fall back on, however if you go to college and get even an equine science degree, you still went to a "regular" college, would take business courses, and science stuff. and if you needed to find another kind of job, it would benefit you greatly.
my husband went to a trade school and is curently looking for a job and it has been a struggle, because he is quite limited in options because of it, it seems.
if your grades aren't the best you could do what i did. my first 2 years of college, i went to a smaller junior college that was not as difficult to get into, i did well there (the classes were much smaller, etc), and then after two years went on to a university to finish my bachelors degree. and if you go to a junior college, you can get an associates (most likely science it sounds like) degree, on top of a bachelors degree.
as for not wanting to owe on school...i dunno what to tell you other than aplly for grants to help. most people owe for college, just kinda the way it goes. personally i think it's worth in the long run.
and Vet school... I think you really need to want it. it's a lot of hard work for a long time. you'll learn some really cool stuff, and i know it can be really rewarding, but it's a hard road to get there and it's very competitive. i had a few friends who had to apply for vet school several times before getting accepted.
just some things to think about. hope it helps!
Marianne and Twist
The wind of heaven is that which blows between a horse's ears. ~Arabian Proverb