[timgr]

15 ft is pretty low. Would your antenna really be that low? That's like the roof peak on a very shallow pitch roof. Higher would be better, above the roof. What are the surroundings like? Surrounded by trees?

You have a lot of channels to choose from. You could approach this a couple of ways. One would be to buy an antenna, put it on the roof and see which direction(s) give you the best mix of channels. Or you could look at the channel list and decide what list of channels is essential to you.

Most of the channels on your list are UHF, 14-51, and could be received by a UHF-only antenna like the DB8e. The DB8e is more sensitive than the HD7697P, and you can aim each panel in a different direction. If you want WMFD too, it's strong enough that you should be able to pick it up with the VHF dipole kit on the DB8e. Aim one panel at WOSU and the other at WMFD and put the dipole on that panel. You may miss 28, 45 and 22 which are pretty far off axis to WOSU and WMFD. Not sure that you can reliably pick up all of the strong channels in your area with a single antenna ... you'll just have to try it, and find the mix of channels that pleases you. Or add a second antenna for the off-axis channels, and multiplex with an A/B switch or a tuner/HTPC combo.