Final update for this project.
Installed the Winegard HD7649P along with the CM-7778 amp in my attic pointed towards mag 160.
My signal strength is 'Very Good' for the ABC, PBS and FOX affiliates, while the NBC affiliate (real-36) is a "Good' signal as is the CW affiliate (Real 45), which has CBS in SD (62.2).
So, all in all, I'm happy with this setup, and considering my topography, I was surprised to do this well.
Thanks for everyone's help.
