ack autocorrect again. You are welcome to ignore the helpful advice, OP, but most of us, with a lot of experience, can predict that your opinions and choices will likely change many times between your freshman and senior year of college. And where you declare residency (eg for tax purposes) will likely make a difference. It’s also quite possible you won’t be homeless all 4 years of college. You’re welcome to put your fingers in your ears if that’s what helps you, but we are all trying to provide information based on experience and knowledge.
If you have income from those summer programs or the extras they provide, you may have to file taxes (as others have already told you). Selecting Texas is wise as it has no state tax, but whether or not another state would consider you homeless for instate purposes may vary by state. And who knows in 4 years if the policies will change. Relax for now.