hi and welcome to the world of Satellite TV
First, are you planing on connecting 2 or 3 TVs-
If you are looking to hook up 3 different TV's, then you will not be able to view anything recorded on the 522 if the Hitachi is not one of the TV's hooked up to the 522 (unless there is a way to split the signal and bring a coax feed into the Hitachi, that would mean that you would not be able to control the functions while watching the Hitachi. That is unless you split the signal from the second tuner that has a UHF remote that would be able to transmit commands through the walls)
If you plan on just connecting the Hitachi and the 13", then you can do what is written below.
The 522. is a 2 tuner receiver. If you want the ability to watch TV on both your Hitachi and 13" TV in the Kitchen. I would suggest putting the 522 in the room where the Hitachi is. The Hitachi could use the 1st tuner in the 522. Then the installer should run the second coax to the 13" TV which would use the second tuner in the 522. As for recording something on the 13" to later watch on the Hitachi, Itis my understanding that both of the tuners in the 522 share the hard drive, so you should be able to watch anything you recorded on any TV, but maybe someone else who has a 522 can confirm this
I am assuming you would also be installing your 811 on your Hitachi. Since your 522 and 811 will be on separate inputs, you will be able to use your PIP.
If you were hoping to use PIP with only the 522, you would need to have both of the 522 tuners plugged into your Hitachi
As for a second dish- There are some areas that utilizes a second dish pointing at a satellite in position 61.5(referred to as a wing satellite). Some markets place local channels on this satellite, which would allow you to get this dish free of charge if you wanted it. But as of right now the only HD channel left on that Satellite is CBS-HD. You would have to check with Dish to see if you would qualify for that channel. This is regulated based on the market you are in, whether it is an Owned and Operated Network station or affiliated station. If it is an affiliate, you may need a waiver from them to get CBS-HD
One thing you did not state, do you have an Over the Air Antenna (OTA). You will need one to get your locals in HD with the 811
It may seem a bit overwhelming, but it is much easier done than it appears to be written here by me. Maybe someone can explain it better, if I sound confusing