For just the HD Pak and Voom, with the possibility of adding an AT## package, the Dish1000 is fine.
To add CBS-HD from 61.5° or 148° you would need the expensive DPP44 switch (the DP21 can not be used with the DPP Twin). You should, however, be able to get a Dish1000 with 3 DP Duals instead of a DPP Twin and DP Dual. That way you can leave 119° disconnected, running 110, 129 and the side dish into a DP34.