For this reception situation this is the least that can be recommended for reliable reception.
I was going to recommend a 2 antenna installation , one for Canada and one for American.
You could do without the AP8700 preamp at this time. WPXJ-DT ION is Very Weak signal strength.
The AP8700 preamp is mainly for reliable reception of WPXJ-DT ION. If WPXJ-DT is not received reliably with out the preamp , you could add the preamp later.
Here are some examples of antenna mounts , The Ronard mounts are High Dollar , you can search on the internet and find the same type and kind of antenna mounts for less money.
http://www.ronard.com/909911.html ,
http://www.ronard.com/34424560.html ,
http://www.ronard.com/ychim.html ,
http://www.ronard.com.
Or you can make up your own antenna mount. Make sure the mount is strong and secure so the antenna will not fall and break. Reason: the antenna cost is a few more dollars , then a few.
I Strongly Recommend use the HD7696P antenna , the HD7696P antenna is the best antenna for your reception situation.
Do Not get a , HD7694P , HD7695P , HD7697P , HD7698P. And I do not recommend any other type or kind of antenna.