Mike, thanks for the kind words!!! I appreciate it!
I just have one thing to add, at this point: I think you MIGHT benefit from the larger valves with NO porting, at this point (low-boost) say, 10-pounds,) and a 5,500-rpm redline, but the reason I say that is I believe that porting is not a very good bang-for-the-buck, when you can just add a a couple of pounds of boost and pick it up some (rather than reverting to a ported head for a performance increase.) That (a boost increase) doesn't cost anything,) whereas porting can be expensive unless you do it yourself, not an avenue I'd recommend.
Just some food for thought...