It depends what sat. your locals come from. If you need 61.5 for your locals you still need 129 or 72.7 to get all of your locals.
It is possible to cascade another 64 switch to add support for four more receivers. However, it is costly and complicated. .
If you are able to receive all of your programming from 110,119, and 129, you could get a DishPro Twin and a Dish Pro single or dual. These would go on a 1000 dish with the proper adapter. You would then need to run three lines (one for each sat.) to the first DP34 switch and then trunk those lines from the right side of the DP34 to another DP34. The ViP 211s and the 311 are DishPro and will work fine. The 3700 is a legacy receiver and will need a DishPro adapter to work properly.
What are you talking about???
Legacy receivers can read ProPlus switches (like the DPP33 switch) without DP adapters. Also you are just asking for unnecessary trouble if you use an integrated switch/LNB if you don't have to, your better off using 3 DP duals.
"It depends what sat. your locals come from. If you need 61.5 for your locals you still need 129 or 72.7 to get all of your locals."