From a guy who lives outside of town and uses satellite, some thoughts:
It's not that fast, pictures and large files take a looong time to d/l. And we have the $80/month big bad mama-jamma package. Coming from dialup it'll seem like lightspeed, but stepping down from cable it is kind of painful.
Quick up/downloads, like Xbox live, online gaming, etc. is a big no-no. It takes quite a while to fire the request off to the satellite, back to earth, out to the web, and do the whole thing again to get it to your computer. You won't notice browsing forums, but your buddy sniping you in Halo 3 sure will.
For the $40/month for a cell phone broadband card, I think that's the better option. Between Sprint, ATT, and Verizon, one of them should have 3G by your house. I have ATT for my cell phone, and they don't have 3G at my house, but Verizon has full strength. Worth checking into as an alternate.