Building a 340 engine

If it were “I” building this engine with what you listed, I would just simply fully port the Edelbrock heads with the stock valve sizes, use the RPM intake, a 750 carb, throw the cam away for one with 20* more duration.
(I’d look at Lunati solid flat tappet cams....)

The short block would be forged zero deck pistons with deep valve reliefs. Depending on the cams lift, perhaps a rocker ratio upgrade.