What should I do with my Travel Trailer? Student needs help!

Ditto on pretty much everything above.

Can't advise you on whether to stay in a TT or move into an apartment - thats a lifestyle question. Don't put money into that TT - if you open that wall up, you will find a lot of issues, and you'll end up needing a lot more than $2500 for a proper rebuild. If you want to stay in a TT, flip it and put your money into a better TT.

By the way - if you do intend to get a better TT, start looking now, and avoid anything with water damage. You may be surprised what you can find....