Ideas for roof mounting Omni antennas?

[dustent]

I'm looking to roof mount two Omni antennas (http://3gstore.com/product/3623_cell...t-cm-wifi.html and http://3gstore.com/product/3047_3g4g...i-antenna.html) for Wifi and Cell connectivity. I have a '16 25FB without the crank up TV antenna, which seems to be a common place to mount these type of Omnis. I just have the disk type TV antenna.

I'm looking for ideas for permanently (or easy semi-permanently) mount these two antennas to the roof. Should I just get a cast iron pipe base flange and VHB/glue it to the roof for the mount? Do I need to get the antenna above the A/C unit?

[dustent]

mods - you can delete this post, i'm going to repost in the correct location.