They are coming to install a dish 1000 which will give you 110, 119, and 129 satellites, the 625 will have a single cable going to the LNB from the receiver, and there's a DP splitter that comes with the 625 to do the 1 cable thing [the installer will use that or supply their own]..
For your other 2 TVs, if you didn't specify one as an HDTV they'll just use a 322. See, that 322 can also be used with a DP splitter..
However, if that 3rd or 4th TV is to have an HD box, then you'll have a 625, a 311, and an 811.
In that case, your 625 will get 2 wires because they'll have to use DP Twin and DP Dual LNBs going into a DP34 switch. The 311 will get another coax, as well as the 811.
That'll allow you 110, 119, and 129 on all your TVs. 148 really isn't needed unless you plan to sign up for internationals, and in that case you'd need a DP44.
If you really wanted to make this simple and still wanted an HDTV in the mix, you'd need a 625 and a 942, which would both only need 1 cable each to a DPP Twin+DP dual LNB combo.
Thing is, a 942 costs $250 + $5 a month to lease, not including the extra receiver fee.
No matter how you look at it, you'll need a DP44 to do 110, 119, 129, and 148 for all 4 TVs. If you wanted 148 on only ONE TV, then you will want the receivers + dishes setup with a DP34 switch, take one of the outputs, plug it and the output from the 148 LNB into a DP21 "switch", and you'll have all 4 satellites on that 1 TV. As always, you can repeat that once more for another TV if desired.