It's do-able, but I would think you would be much better off with a dedicated dish for your high speed internet. If you can get DSL through Cable or Telphone lines, they are much faster than Satellite DSL. As far as a Big Dish for C-Band and Ku-Band, that's great, but if you are comparing it with Directv (for programming), then go for a 4dtv receiver and you'll have cheaper programming than Directv offers. And you can also get a DVB receiver and utilize both C-Band and Ku-Band for some great supplemental programming, and it's Free. Or you can get away from subscription programming and watch plenty of variety programs of all sorts. But take note, there is no Free Lifetime or Halmark and other such familier cable type channels. There are so many different things or ways you could do or go? I don't have time to write a book, although, one would probably get rich if they did write a book on all the different "How To's" and "What If's", that can be done with the right equipment. Anyway, Welcome to the Forum and Good Luck!
Al