I can see the benefits of a small college... BUT going to a larger school doesn't really mean that you would know everybody.. I mean my high school had around 18-- people at it and I certainly didn't know EVERYONE.... I knew my class... but certainly not EVERYONE... but that may be different at a college where you're living there... also it's possible to get to know your profs at larger school.. it just takes some effort on your part... My school has 20, 000 people, and maybe it's just my department or something..but I can safely say that *almost* every professor I've had in my major knows me and I would feel comfortable asking for recs for grad school or whatever and they would know stuff about me to write a fairly personal one. They may not invite us over to their homes or send cards... but they know who I am.
Both larger and smaller schools have their benefits. Ally GOOD LUCK sounds like even though greek life is small... it's pretty popular at your school so have a good time and it seems to me (of course I can't guarentee anything not knowing you or your school) you don't have much to worry about in not getting a bid at all coming from a small greek system... I think as long as you keep your options open and attend all the parties you can you will find a home