It is all your choice , You do what ever You think is the best.
To reduce confusion to a minimum. Here is the information.
Your location has receivable Tv stations/channels in ALL 3 Tv bands.
VHF low band channels 2 thru 6 , VHF high band channels 7 thru 13 and UHF band channels 14 thru 51.
I recommend install a Winegard HD7082P , ALL band , ALL channel antenna aimed at about 240 degree magnetic compass.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
Here are some Strong and Sturdy above the roof antenna mounts ,
http://www.ronard.com/909911.html ,
http://www.ronard.com/34424560.html ,
http://www.ronard.com/ychim.htmlhttp://www.ronard.com.
Buy the ronard antenna mounts at solidsignal buy typing the word ronard in the solidsignal search box.
Here are places to buy antennas and etc. ,
http://www.solidsignal.com .
http://www.winegarddirect.com ,
http://www.amazon.com.