Hey, Welcome to the MFC! I can't claim to know anything about this type of stuff, since the only other General Admission show I went to was Mika @ the Gramercy, and I was there very, very early and didn't see what time people towards the back lined up. I don't think you'll have too much trouble though, as 7:30 is still pretty early. I mean, you probably won't be front and center, but I heard the theater is great and there are lots of good places to see the stage from. Good luck! See you tomorrow!