The reason I like Winegard is the quality is unmatched and they are not manufactured in China. Also they are one of the only companies that offer a VHF HI/ UHF combo antenna.
The reason for the HD7698P is although it may be overkill, you don't want to get "underkilled" . Also if you do decide later you want further channels, you'll have no regrets.
Rabbit mentioned a preamp also. Lots of good ones out there. You will be golden with a combo like that antenna and a CM7778
I use the RCA PREAMP1 only because it is a combiner too, but the cool thing about it is if you unplug the wall wart, it still lets the signal through, good for diagnostics.