I would mount the CB antenna to a front bumper if you have an aftermarket bumper.
As for the Ham radio antenna, I use Diamond Antenna K400 Hatch mount http://www.diamondantenna.net/k400.html It works awesome. I run an NMO with a comet SBB1 in the city and a Comet SBB5 when on the trail. I love the setup and have had 0 problems with it. . .