St. Mary's in Kansas (the SSPX college) is not accredited to my knowledge. If you are going for college for the degree, that choice is very imprudent.
Community college OR university - if you have the financial aid. If a teaching degree is your goal, you might be able to take care of prerequisites at a community college.
College is do-able if you have scholarships.
Living at home saves a lot of money. If you must live away from home, try renting a room or apartment.. If you look on university websites, almost half the projected cost is the money you pay to live on campus. If you can find another option that is cheaper, take advantage of it.
I highly disagree with the idea that college will make "mince-meat" out of traditional Catholics that are steady in their faith. University campuses have plenty of places that you can avoid the crowd and study on your own. Oftentimes, their library systems are extensive and have plenty of good Catholic books to study in your spare time.
In short, if you aren't one to go with the crowd looking for a good time, squandering your parents money at Starbucks, shopping, going to parties, etc not a lot of people will want to "hang out" with you and the feeling will be mutual. If you are really considering college, just consider it from a practical and financial side - i.e., what you want to do with a degree. Don't be anxious about the environment. At least not overly anxious.
* I am currently in University as well. Just out of high school.