Only 460hp

Given readily available cylinder heads out there, and the fact you're running a stroker, you'll be hard pressed to go too big in the head.

Trick flows are quite an investment requiring specific rockers as well.

What is your goal, power wise?

I would not go smaller on the cam. That big engine needs the big cam.
HS rockers are only "required" with Magnum style Trick Flows. That's what their website says. They are about $2500 give or take or few "out the door" at Summit. That depends on which spring/retainer pack you go with.