I worked full time for 2 years before i went to university, when at university i also had a student loan, which i'm paying back now. I saw numerous people who i went to university with drop out or become severely depressed due to financial struggle - DO NOT TAKE IT LIGHTLY, if you cannot afford it, figure it out before you commit to it.
As for where to go, look for places that are the best for your area of study AND for the quality of life in that area. I went to a university which was amazing for my field of study but beyond abysmal for everyday life. It made my 3 years very boring and tedious.
And finally, have fun. It's your first time living, take risks, try new things and talk to new people. It's all scary but then again, what isn't :)