Joe,
Do you ever have any weather related problems with that set up such as sun spots and heavy down pours blocking the signal? Out here we don't have much in the way of wireless, but in Chico they had a company or did if it is still on business that one of my friends switched to. Their system never had close to the range yours does though. You had to live within a mile of one of their repeaters and Dave lived about a block from one. But after a month he left them as he said half the time the signal was blocked by weather or anything else it seemed.
That sounds like a good system and would work well for some of the people off up in the mountains that can't get cable and can only use satellite service which is weather affected.
Ron