If they were mine and going on a 462 incher,
I'd swap out the intake valves for a 2.1" and cut the seat at 45*.
If your springs are getting up there in K factor then a drill and tap of the rockers stud holes for heavy duty inserts is not a bad thing.
Unless your driving it to work everyday cam that sucker up.
You want the kids with the fart cans to pee themselves.