Hey Ben,
I bought a few different mounts for mine mate and could near on mount it anywhere now. i have 2 different Grab rail styles for the bull bar or even the light bar i reckon no trouble, or the grab rail inside.
I am assuming your using the perspex as a mount to use the suction cup style mount to?
Make sure once you have the memory card that the first thing you do is the update as the wifi will not work and wont link to your phone for a remote control unless the update is done. Found out the hard way!!
I bought 2 Micro SD cards from China and they arrived in 3 days mate!they are Sandisk Brand and i think they will be fine. Saved a heap of cash. ;)