318 Chyrsler Stroker kits

Hi guys, iam planning on stroking my 318, here is what the kit contains. Scat 4.00 inch stroke cast 9000 series crankshaft. Forged keith black dish pistons. Scat i beam connecting rods. Total seal file fit rings. Clevite 1/2 groove tri-metall main bearings. Clevite narrowed tri-metal rod bearings and a crank key. This is what i drive now, 1974 dart sport 318 , the engine has the stock pistons (flat tops) the block is not zero decked with reworked 318 heads. I run the rpm intake with a holley 650 with a 1 inch carb spacer. The camshaft is a comp xe268 477/480 with a set of hedders.This car also has a 3000 stall with a set of 391 gears in it, i also got the cars weight down with fiberglass parts it weighs about 3100 pounds with my fat a ss in it (LOL). The engine of course will have to be torn apart, so here is my ? to you guys. Does the block need to be zero decked?. Is the eddy 60779 heads a good choice for this engine(63 ccs). I think that iam undercammed now, can you recommend a better camshaft? Will the 650 holley carb be to small? i was thinking holley 750 . Any help is grateful, iam going to do this i think once this is done i hope to have a strong street machine. Thanks Newathis