Okay, first, Thanks For the rapid response and very informative answers. I have a really great electronics store very close to the house and their prices are fantastic. My big "?" really had to do with, are runs like I need to make reasonable. Seems they are. I remember when data runs and parallel cable runs had to be kept short.
Secondly, and I think I answered it myself:S. If I use a splitter I can send to both sets and I don't need an "A" - "B" switch. The TVs have input selectors. If some one want to watch the news up front and the little someone's want to watch a movie, they tune in HDMI1 and I tune in cable or antenna, problem solved.
Goodness gracious but this RV stuff is fun:).
Thanks Again, Dave