Well folks, if you seen in the pub,  I am going to be getting DirecTV in an effort to help expand our DirecTV area (and in addition I will be working with DirecTV to expand our area) 

  It is my hope that with DirecTV I an finally talk about DirecTV and know what I am talking about so I can better support the DirecTV folks here at SatelliteGuys.
Anyways I had a friend check on my account with DirecTV, since I had DirecTV for NFL Sunday Ticket 6 years ago (and only Sunday Ticket)  in his check he saw that I was purged from the system and can sign up again as a new DirecTV customer.
I was only thinking of getting a HR 20, however now that the equipment is free (or lower cost) I am thinking about getting a total of 3 to 4 receivers.  
All of my TV's in the house are HD.  But I don't need HD receivers on all the TV's.
I only need one HR20, which I understand will cost me $199. What should I get for the rest?
I was thinking 1 or 2 MPEG4 non DVR receivers, and a SD DVR.
Do I need one of the 5 LNB dishes or will a 3 LNB dish be enough?
Thanks for any advice you can give me.