Ok so the 508 isn't an issue.
I'm currently shooting 110/119 and 61.5.
Locals appear to be on 61.5
Location is near Niagara Falls (or Buffalo), NY.
2 dishes.... 3 birds. I thought I had all this in the first post, but I ramble on so much it's probably not easy to spot.
Why my proposed dish location on the house? To get them as far away from the pines I have to shoot over as possible. There's a row of pines down the south side of the house. I am pretty near certain I can clear them looking southwest for 110/119 from the northeast corner of the building AND they won't be visible from the street. I don't think 61.5 will be a problem at all as the pines stop at the back of the house ... they don't run the full length of the property line. So 61.5 should be a very clear shot.
We only have 2 TVs. If I wall mount the bedroom one, then I don't need flexibility in that room.

Wife is set on the location of the TV in the living room. So I'm not sure I want to add cable connections in that room anywhere else. So why bother with a central panel in the basement? I figured it would be easier LATER if I want to add a run to the back patio, or to the kitchen, to have a panel with switches mounted and stuff right in one place and work from there.
Basement is currently unfinished. I'm going to add 2 rooms down there, neither of which will be media rooms, and it will end up being partly finished... and partly basement.
I figured I could decide on a panel location for the satellite stuff and also mount my cat5 patch panel there, locate the DSL modem and switch there, possibly set up multiroom speakers from there.... stuff like that.