The 500+ and the 1000+ are used to bring in the 118 satellite.
And since you have HD and thus getting programming off the 110, 119, & 129 sats, you actually need a Dish 1000+ to add the 118 sat.
And you definitely need a DP Plus 44 switch since you need 4 satellites.
Even if you were just needing the 119,118, & 110 sats, you would at least need a DP 34 switch.
BTW, you might want to consider letting your 129 dish stay up and letting him put up a Dish 500+ and then just tying all 4 sats into the DP Plus 44 switch. This would allow for the signal strength that you're receiving now off the 129.
However, this does peak my curiosity. On the Dish 1000, the 129 has an optimum signal strength in the 70-80 range. I'm just wondering that since the Dish 1000+ is a little larger if the 129 will have a higher signal strength from it.