Okay, here’s the deal O’Neil…
On the undergraduate side of things, it really doesn’t matter if you attend a seminary or not. Major in what you want, but
you will have to get a minor in philosophy (in Chicago, where I was a seminarian, it was required to have 24 credit hours in philosophy which is more than a minor. 12 hours of theology as well, but that may have changed, and even if it did, it would not have changed that much). Check what the *specific * prerequisite requirements are for the major seminary in your diocese.
Does your state college have a Newman Center? You should be able to find Catholic community at a state college, despite the party atmosphere. And really, if your vocation thoughts can’t survive the test of being at a party school, then you might not have a vocation. Are you really that tempted to partake? You could be a good witness to your classmates. It is a fallen world that you will walk through, ordained or not, so why not put your vocation to the test? Get a spiritual director (a qualified one–ask for a resume:blush

and keep a circle of faithful (Catholic or otherwise, at least “God-Fearing”) friends you can rely on. And…why not go on a couple of dates?

Even seminarians at the undergraduate level have been known to date while in the seminary (clandestinely, of course, but it happened), and at your age, it might not be a bad thing (not wild sex, but dates. Dinner and a movie, handholding and hugs, a goodnight kiss on the doorstep, etc).
Even if you have college debt after you graduate, a major seminary is unlikely to turn you away just for that,
especially if they think you have a vocation as much as you do. You have four years. Discern and be as steadfast as possible. It won’t be easy, but neither is being a priest. Going to the seminary is no guarantee against wild parties anyway. Trust me, I know. We had a yearly Oktoberfest celebration at my seminary, and the Jagermeister flowed.
So anyway, I’m an old man (41) and I finished the seminary, got married, and I’m now getting divorced. You may actually feel more free to discern at your state university (I taught college English for several years, and counselled several of my students who confided in me that they felt they had a vocation). The title of “seminarian” can be a burden as well as a blessing, especially if you’re not really sure. You are still discerning. Don’t get me wrong; I do know a priest who never dated, went through seminary for his entire education (high school, undergrad, grad) and claimed to never have missed dating. He was *that *sure.

But he was a rarity. I know of another priest whom broke up with his girlfriend the week before he became ordained. Both are vital members of Church. Who’s to say what your walk will be like before you start walking?
So the practical advice is: find out the curriculum requirements for your major seminary. Others have said seek out your Vocation Director. Good idea. He’ll probably have an exact figure of what “acceptable” debt is. Remember, as a Catholic Priest, you *do *get a paycheck. And if you live in a parish, you won’t have to pay rent or utilities.
