Chevrolet: Chevy Carb, double pumper, vacuum secondaries

Question
i have a 1979 camaro, with a fresh 350, mildly hot cam, flow tech headers into dual 40 series flowmasters. It also has an edelbrock RPM air gap manifold. The engine runs really well but i'm thinking that the 600 cfm carb just isnt enough. Would bumping to a 700 or a 750 be too much for that motor? Whats better, double pumper, or vacuum secondaries? any info would be appreciated. Thanks

Answer
Hi;
  Hea i like that, yea I think you should go with a 700 double pumper as if it was   a bit to much you can always go down in the jets size. If you do have a 600 on it now, before you get a 700 try to squater the jets go up  in sizes example if it has 60 s in it go 68 r/f 72lf l/r 72r/r do you get it. try this if you can if not get the 700 as it should be fine.I had a 750 dbl.ppr on a reg 350 and it ran ok but it would bog out when I would get on it.
roger / bigw45   good luck