Build your CB into your push-bar, make the cables long enough to reach inside your vehicle with the bar installed, mount an external speak there as well. Use quick connects to power it so that you can install the whole unit in a few seconds. Mount the antenna in the center of your push bar, it will give good reference as to where center is when looking out the front of the push truck and lining up the vehicles.
While you are at it, install 12v power to the push bar and hard-wire a set of jumper cables to it, make them long enough to reach your vehicle's battery terminals. Never know when you will need a quick jump.
Install an
additional fire extinguisher on your push bar, really convenient and easy to get to should it be needed.
Last, put a nice box with a lid to drop you line supplies into, make sure it closes tightly so that things don't blow out (Misc tools, remove before flight tags and such).
If there is any room left over, install a cooler too, it is nice to have a cold beverage handy when waiting in line