I would suggest you put Coax at all location at least 2 - 1 for D* TV & 1 For OTA - As far as sending TV around as "Slaves" if you want to send SD signal -then coax will work - If you Want HD Signal you can run HDMI and put HDMI switches at your D* Boxes and send them that way.
You could also do runs of CAT6e and send HDMI over that as well. Your best bet would be to put conduits in all locations and then put what you need as you need it -when things settle or tech changes -
Don't forget your feed lines from your Demarc location Coax for cable modem and as many as 5 for D* if your need for extra turners may increase over timme.