Luke...some things, like a quiver, you can go cheaply on by taking a used bow quiver and going G.Fred style..at least for now. I suggest you spend better money on the tree stand and make it safe. Also, in the NBEF booklet is( or was ?) a cheap way to make homemade tree steps (tie on) they are in no way great, but they work, I have used them before, and the price is right (nearly free), again...for now.
I really suggest you spend good money on a few important things and work up to better quality on other things. You have lots of time to do this.
Camo...well, we all discuss this all the time here. You can really get by well with the right plaids, even from a second-hand store, again, for now. We all started...not all of us were wealthy to start off (well, at least I wasn't....come to think of it, I'm STILL not, but I have had a number of years to buy good stuff, over time).
Hunting from the ground, out of natural blinds or just stalking and leaning against a tree is not so bad, and it sure is cheaper. You also have less storage problems for your gear.
Good luck in your try for University attendance. It is a good thing for your future.
ChuckC