Welcome to DSLReports.
I have had pretty much the same experiences as you have. And feel the same way about the system, compared to dialup. For those of us that have no other choice this is GREAT.
As for your questions. You might want to have a look over here »
Satellite Forum FAQ and see if that will answer any for you. It made a big difference in my performance after the tweaks. Also there are many very experienced people in the satellite forum that are very willing and able to help with any of your question.