Well, I finally pulled the trigger and put my money where my mouth is.

I ordered the following custom grind for my 401 from Engle through the machine shop I've been using.

Lobes, Engle K52H Int, K54H Exh
Rocker Ratio,1.6
LSA,112
Int. Duration@.006,254
Exh. Duration@.006,260
Int. Duration@.050,209
Exh. Duration@.050,214
Intake Valve Lift,488
Exhaust Valve Lift,501
Overlap,33
Hydraulic Intensity,45

I chose this cam to make power in my rpm range with my setup. With my gearing I will not likely be exceeding 4000rpm very often, if ever, and I am looking for a flat curve with good off idle grunt.

This is my first best guess at acheiving my goals, all things considered.