[elmo]

I like that little ANT751. I had one for a while and was pretty impressed. Being that I needed a little help on some, I sent it to Mom's house and it's been a stellar performer, in her attic of all places. I did that as a test and expected to put a ladder on the roof, but no need. Anyway, I ended up going w/the same Winegard HD7696P as these guys are recommending for you.

One antenna can definitely do the job for all. But start out with just one TV. That way you have less factors to contend with all at once. Then you can see about roping in all the rest w/the necessary hardware. Maybe try just a single direct connection as well, just as a test, bring it in though an open window. If that works, then you can possibly tap into the existing coax running through the house. But that's for later.

I am a cord cutter myself, for a couple of years now. Was hard to make that first step. Wife wasn't sure she was on board. But she's pretty happy with it now. And when you aren't dropping $75/mth on cable TV, it's pretty easy to invest a bit here an there for some good OTA hardware! Good luck.