NOT necessarily, since there are now 13 channel (tuner) LNB's available, which also access all the slimline dish birds: (including 119)
http://iamanedgecutter.com/docs/5D2RB LNB Edgecutter Review.pdf
HOWEVER, since I do firmly believe in having too many coax runs...if the location where you dish is going is going to be hard to (re)run more coax at a later time, I'd certainly do it now, as cheap insurance. You might even want to consider another run for a possible OTA antena.
With the receivers you've listed, you only need 11 tuners out of your LNB, so you would actually have a couple spare channels available.
Also, with THAT many receivers, & depending on how many people are in your house, you might want to seriously consider maybe making 1-2 of the H25's, into HR24's? You can still share ALL of the DVR's shows with each other, as well as ALL of the other receivers, including the thin clients.