There is no way for a customer to know whether he's getting a quality installer, whether it be a retailer or in house tech. It's the luck of the draw. Getting one or the other doesn't mean the cust will get a good install nor that it will be up to Dish specifications. Personally, I think a cust is better with an in-house tech because there is a more likely chance that the job will be qc'd and if the installer is concerned enough about that he will do a good job (although that alone will not deter some from doing a poor job). Also, in house techs are supposed to provide free installs for the most part - not necessarily true with a retailer. The customer will get a free install, and new equipment, regardless of whether he buys or leases. Krinksta...call Dish directly and get yourself an appointment. If mounting the dish to the house or roof is a problem, it can be installed on a pole (obviously you have to have a los for any mounting option.) If your dad is dead-set against drilling any holes into your room to get the cable there, have the tech use a flatstrip which goes under the window frame and causes no damage.
No ground, no install, huh?? Really...here it's ground if it's available, install anyhow. Replace RG6 with new RG6?? Say it ain't so! 2250 RG6 is 2250 RG6 regardless of who makes it. Not a lot of installs gonna happen under that criteria!