Thermoquad vs square bore

Im debating between a built thermoquad from www.thermoquads.com the street/strip carb that claims to give 25-30 HP over stock. i would get an alum. performer intake from edlebrock or the arction intake from weiand.

OR the edlebrock performer RPM air gap with a good holley carb.

My motor is a 1970 340, 10.5-1, cam, headers, elec. ignition, head work, complete rebuild. Its in a 1971 duster 4-speed. If anyone has input on what will produce better performance let me know. its a weekend driver that goes to the track sometimes. I love the kick of the thermoquad but i want the best times too.