You've hit on a topic of great interest to me. I don't know if I'll touch on everything, but here's my first take.
College degrees are extremely over-rated, all the more so in the current economy. That's not to say that you shouldn't get one, but if you want to pursue one, do so with a plan. I have a BA and an MA, both in English. Those qualify me to sell coffee at Starbucks. When I was going through these programs I was 100% sre that i was going to teach English. Near the middle of my last semester an instructor told me that the way to get an English teaching job was to adjunct-teach at as many locations as possible and wait for someone with tenure to die. This would have been useful information to have around the start of the process. As it is, I actually work in the training design industry, and can tell you that every time the economy gets bad, they look at getting rid of training designers first.
So, my point is, if you want a political science degree, talk to people in the know (profs, pols) and ask them how you can parley that into a job such as you want. Then ask them whether you could just as soon do that without that degree. Then ask them if another degree would be more useful. I know several people with film-making degrees; none of them work in film-making. I know several people working in film-making; none of them have film-making degrees.
Finally, do everything you can to avoid taking out student loans. I should have mine paid off about 5 years after I die.
Or you can avoid college altogether. As I said above, i think it's highly over-rated. College ceased to be about learning in the 60s ad become about political indoctrination. Pity; lots of people need to learn, and nobody needs their brand of indoctrination.
So if you go that route (no college), once you find the thing you love and want to do, put together a business plan. Be realistic with yourself about what you can accomplish, and then decide from there if it's something you think you want to do and can be successful at.