I’m sorry that you received poor guidance in the college search process, I’m sorry that you’re stressed, and I’m sorry that you and your family have had to deal with a lot. That stinks, there’s really no way around it.
That said, however, you have performed well enough that it looks as though you will have close to a full ride at IUP. Most students whose families are approaching the poverty level have to live at home and work, maybe getting to take 1 or 2 classes/semester at a local college, meaning that it takes them 2-4x longer to get a degree than you probably will.
Because of all the hard work you’ve put in, you have a spot in IUP honors, you’ll be living in a dorm on-campus, and from what @MYOS1634 had said, you’re likely to be among the top students, getting you access to the best opportunities available at the school.
Additionally, if you read many threads of people who are interested in med school, the general advice is that the name of the college on your diploma doesn’t matter. What matters is that you have high grades and a strong MCAT score. Getting the highest grades is much easier when you come in as one of the top students, as your background is likely to give you a leg up on a lot of the competition. Many people who come from families that have a lot of monetary resources are advised to go to one of the least expensive options they can be successful from including non “name brand” colleges (like state flagships or Top X schools).
If you decide to submit additional applications, know that there are people here who would be happy to help you in any way possible. But if you decide not to do any more applications and roll with IUP, realize that all your hard work through school has paid off by getting you an opportunity to attend a 4-year residential university on-campus with very little additional cost ($1k/year?), and that your hard work is likely to make college easier for you than it would have been if you were goofing off throughout high school.
Wishing you the very best.