Maybe you are over-thinking things on what you want in a girlfriend?

I would agree that you would want them to share some core values with you. But I wouldn't worry about being too similar personality wise or having the same interests etc.

Of course that is (probably) just a personal opinion, if you have had a few relationships you probably have some idea of what you want.

While the above all sounds pretty indecisive, one piece of advice I will give it to not just leave it it just now and hope things get better when you get older or leave the college environment. Because they don't. I swear until recently I did not believe attractive girls my age existed until I saw a couple out and about but they seem to be a missing demographic wherever I am.