Sounds like the perfect chance to get the HR34 and an RVU capable TV... Although the current RVU offering is 55", may be a bit big for the kitchen.
The wireless option you mentioned is the WiFi DECA, that allows your receivers to connect to your wireless network for On-Demand and YouTube, and other internet related apps.
I know there are after-market solutions that could broadcast your receiver feed from one room to a TV in the other, via HDMI repeaters and such, but nothing that DirecTV specifically supports or installs.--
Words of advice for today... "Be Happy, Drink Coffee, Drive Safe!"