I've been playing with the monitors and cameras since they became so cheap. I've never considered the cameras from the rear facing toward the front but it could be helpful.
I like all of your idea except the screen, and I'll admit that your 10 inch screen split into thirds would probably work but I think something slightly wider would be helpful.
I had left and right side cameras that could be selected via video switch on the monitor but did not get much benefit from them as when I needed them it took too long to select the proper camera. I finally just installed two more 7 inch lcd monitors on each side of the dash console mostly in line of sight to the outside mirrors. Now the rear view monitor and both side view monitors are on all the time and are very helpful. The side cameras/monitors do eliminate the small blind spot that occurs from using mirrors only. During heavy rain, my outside mirrors become less functional and the side cameras remain very clear. Adding each side camera/monitor was not expensive, about $70 per side.
If you haven't seen this thread, here's another thread about a virtual rear view mirror that interesting.
virtual rear view mirrorI also suggest either a tilt camera for the rear view, or two cameras on the rear having one for close up (front of toad and tow bar) and one for a longer view behind the coach.
Fred
