Nice job! I've thought about trying installing one of those Winegards myself... big investment though. I have a dish on a tripod that I can usually get going within a few minutes, so not sure if it's worth the $2300 or $2400 to do yet.
On a different note - did you reinforce that swivel arm behind the column? My TV mount that came with it was just screwed into that plywood with 4 screws and - not surprisingly - started coming loose. I added a few more screws to it until after the holidays when I plan to try to open up that pedestal and add some more structure to attach the TV mount to.