Here's my suggestion for dish, move all the international channels to 118.7, it's good and working sat.
That should give some space to dish to add national HD both on 61.5 and 148, serve east with 61.5 and west with 148, see how easy it is.
Yeah then you have to coordinate the repoints, hardware install, etc. to do this. It also makes for a problem when it comes to a 'single dish solution' with LIL.