Need input on combo in a very mild 383/496 stroker

Well, I have no big block stroker experience but if it is all the same to you, an engine is an engine.

Also forgive me when I say, I don't see a whole lot of sense of building a 486 with heavy limitations as described above.

But, these are the parameters and challenges given here today! I think I would....

Shoot for no more compression than 9.5-1.
IIRC, the Edelbrock Performer is no taller than a stock intake. Top it with a 750 cfm carb.
Cam size would be no larger than what the stock converter can take without compromise. The only example I can give is on a low compression '79, 318 where I used a mello Crane cam. The specs @.050 were;
216/228 -.454/.480-112
This used the stock converter and 3.21 gears on stock sized tires.

IMO, I don't think that 496 is going to act much larger than a 440.

You could try and be slick about the build and build it in a similar fashion as a F.A.S.T. engine. Obviously with the high stall, big cam and gear selections but the idea still holds in a much more mello fashion.

Good luck with the build!
I'm looking forward to it.