There is no way that antenna has an 80-mile range. It looks very similar to the Winegard HD7000R rated at 30 miles. Which is more realistic. I would try pointing it South-West or East if possible and compare the two. Receiving WPVI/ABC from the East will require a VHF-Lo antenna which the long element at the rear provides.

I would say it's worth a shot if it's easy to return, but you'll probably also need a preamp so include that in your costs. Preamps: Winegard LNA-200, RCATVPRAMP1R, or Channel Master Titan2 CM7777.

If you have reception issues from the South-West direction (which I suspect you will) then consider an Antennas Direct Element or Winegard HD7694P/HD7698P (best). If you decide to point an antenna East then you'll need a larger VHF-Lo capable antenna like the Channel Master Advantage 60 or 100.