I just wandered over to your actual journal from the grinnell community, because I am muy bored, but I just wanted to kind of let you know that you're definitely not the only one worrying about this. The only schools I applied to are tiny, and though I was absolutely sure when I put in my apps that I didn't want to go to a big school, right now, I have cold feet.
It's one thing to know academically that a college will be small and to know that that will give you some opportunities that you would otherwise miss, and it's another thing to realize exactly how small it will actually be. On the other hand, though, a big school would be way more confusing, and it would be a lot easier to entirely slip through the cracks.
Just my two cents, hope it isn't too weird that I commented over here.