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

I don't see nothing wrong with your plan.
It will have the powerband like a truck engine, Cadillac had the same idea with there 500. Your 496 with 3.23 will pull like if a 383 had 4.30. I'd just build it to 440 magnum specs with no more than 9:1 cr.
If wanting more than stock 440 cam and
If using manifolds pick a cam designed with manifolds in mind. I wouldn't go more than around 268 degrees for what you want.
Any idle-5500 intake will do.