Aftermarket cylinder heads?? Which is best for the money??

That's good because the HS rockers fit like crap on an Ede head... Bad if you want to run a rocker closer to stock spec.
I think the OP should run an iron J head :lol:
Why not a build similar to the RHS X head engine in the Blue 73 Duster? Looking for more than that one? Maybe a bit more compression and camshaft with a set of TF's. Either that or a well ported set of edes/copies.

As far as getting the engine in a good combo/chassis, the OP knows what he's doing!

HS makes a different set of rockers specifically for Eddie heads. I have a set. They fit ultra nicely.