CH4B is a square-bore intake; spreadbore carbs like a Thermoquad won't fit without an adapter, though you MAY be able to modify the intake.
Back in the day, we'd use a 440 AVS to pick up some CFM; now, I prefer the Eddy AVS2. I do like the T-quads though.
Cam: you can throw lift at it, but too much duration will make for lazy low-RPM response.
I'd probably keep duration under 230 @ .050 but look for around .500 lift, favoring the exhaust side for what you're doing.
I wouldn't worry about mech/hyd lifters, but I would get the Johnson or similar improved-oiling ones.
A Street Hemi pan is pretty stealthy but an additional quart capacity, and a Milodon or MP tray with the drains opened up a bit works.
I've had a 383 like the above that would indeed blaze the tires with 3.23s & stock converter, stock manifolds, cleaned up stock heads, 9.5:1 ('68 Road Runner).
Looked totally original.