What Carb for Poly Stroker

I ordered a 650 AVS2 yesterday morning - should be here in a few days. I've been reading about the fuel pressure needing to be between 4.5 & 6 psi. I have no idea what my factory style mechanical pump puts out. I might try it and see how it runs before I buy a regulator. I also have to buy (or I might make one) a timber adapter to replace the aluminum one that I have at the moment. Apparently the Edelbrock won't like the heat transfer from the cast iron manifold to aluminum spacer to aluminum carburetor (I have no issues with my Holley in this regard).
I'm very excited to see how good the throttle response is going to be after hearing all these good things about it.