Carb size?

[84_GT350]

Ok...well...I figure it's time to wrap this one up. I've heard a lot of good things and, after having a Carter, I'm ready to try running a Holley. But what kind should I get? I'm sticking with 600cfm, but should I get a DP with vac. secondaries? I've also heard really good things about their carbs with dual inlet bowls. I'm looking at a 600cfm 4150 in Summit (#HLY-0-80145). It's a double pumper w/ electric choke, dual inlet fuel bowls, vacuum secondaries, and a Ford kickdown linkage. Does this sound like a good carb for my setup? Screw gas milage... I just want more power without fouled plugs and such. Is there another better option?

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1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s