I'm a few years older than you and in college, also a trad Catholic young woman. First, I'd like to commend you for trying to get your options laid out before you.
Community college is a great idea. It's not too pricey and you can commute. I'm attending the state school and live close enough to commute- I cannot stomach the thought of living in the dorms. Colleges ARE cesspools of sin. Don't count on making many friends because you won't be popular as long as you don't join them at the bar Wednesday nights and have a boyfriend who has no intentions of marrying you, and more besides. I feel completely alone there pretty much, which is okay- I'm not a terribly social person, but the degree of immaturity is appalling. There are a couple of faculty persons in Animal Science whom I associate with pretty frequently- not Catholic, but conservative individuals who respect my beliefs as much as I can hope they could without being Catholic. I have been working with these people and they are about the only ones I can kind of consider as friends.
I would highly discourage you from seeking a husband via college. How you will find one I can't tell you- I feel I'm probably called to be single, but I'm open to marriage if that is God's will for me. I truly have no clue how I'd ever find the kind of man who'd make a good husband- my ideals are too far-fetched for most in the world. The simple fact that he'd have to be traditional Catholic is enough to narrow the options down to almost nothing, it seems. But my opinion is that you should start at the Communion rail.
I would study something that you find interesting and useful. If teaching is that, then go for it. But many areas could also be useful for you. You could even start taking basic classes like math and humanities and then transfer them to a four-year college if you wish, and for much cheaper.
I am not sure that it is wise to simply stay at home and wait to be married, unless you are really occupying yourself in some way- perhaps starting a home-based business or something like that, unless your parents really could use your assistance, such as if you have many siblings or you live on a farm. For one thing, there is no guarantee that you will find a suitable husband. This is just my position on the matter, and I know people disagree on this.