I think the stop and go is the only way, if there even is a way to get the big stack off this hand. If you call you'll be left with 2400 correct? The pot will be 6600 with you first to act. The big stack will have about 16k. Now the range of hands you must put the big stack on is pretty large considering u have no read. But I would say you're not in good shape. You've gotta include all overpairs and a whole bunch of over cards. granted the normal play with a hand better than yours is an isolation raise by the big stack unless he's got a hugr hand but with his stack and no read its a real tough range. ANYWAY... since your first to act, betting ur 2400 on the flop no matter what is the only way I see you getting big boy to fold. He obviosuly comes if you move in PF and hey you might be a slight fav but with the stop and go atleast u give him the chance of folding. I can't see however me folding on the flop with much considering I'd be getting almost 4-1. A limp with 77 wouldnt be a bad play but I like your raise.