If you are installing a 625 and a 311, the best system to use would be a dish 500 with a DP Plus twin LNB. This will eliminate the need for the Dish 1000.2 system and you would be able to go direct from the LNB to each receiver, using a DPP seperator on the 625. Depending on the market you live in, the 129 satellite may not be to correct satellite for HD. Eventually all local channels will be in HD and if you live in a market where your HD locals will be on 61.5, you will not be receiving them on 129. Hope this helps!