Lots of great info here, everybody... THANK YOU!
There are a few shops in town that might be a little more willing than the original shop to give some input on building from the frame up. Not that I blame them, but they just want to sell bikes & parts - not too interested in "engineering", so to speak. I'm not worried so much about cost - but I do want something nice. I'll update what I wind up doing. Don't REALLY want a Sorrento anyway.
-PEACE