Heya, welcome to
TH!
One of the first things I did when I came to college was come out. For the past two years most people have known me as a openly trans man, rather than an assumed tomboy girl. This you can do. But it will involve putting yourself out there and being assertive, which can be nerve wracking and difficult.
College is a great opportunity to start anew. Especially if name change is a concern - it wil save a lot of hassle to not have people already knowing you under a name that doesn't match your identity.
As for living stealth - depending on how big your school is (ie. will everyone in your program of study know each other by the end of the first year? Or is the population too large for that to really happen?), after a few months of hormone therapy, you may be able to find that it is possible to walk into a new semester and have the vast majority of your classmates and professors reading you as male.
My student health insurance (which is done through the school) covers my hormones. Check if yours does too!
Good luck! Feel free to message me if you ever wanted to talk/strategize about anything
