Another Camera Install

So I just had my 2010 Prius (Gen III 2009 model in Aus) for a couple of days and already the wife is asking about potential mods starting with a reverse camera.

I've read numerous thread on here but considering I have no MFD, I was wondering if I could go with something basic like :
- a camera hooked up to the reverse light that fits in the filler
- some wireless transceivers
- a small monitor in the central console/armrest

This should limit cabling to the strict minimum (12V from the reverse light, no cables to run in panels), have a semi factory exterior look and a display not taking dash space.
Any advices / recommendations ?

 

Answering my own questions as it might soon become a journal.
So, checked the little car tv monitors and didn't really liked them (taking a lot of space for limited use).
Back to the drawing board and i thought about something like a video hooked up to wifi. I could then reuse an old smartphone as a monitor (and in the future OBD tool).
I found some kits on eBay but all relying on some dodgy app (as in, not quite sure about support).
Being on the geeky side here is the current plan :
- Connect reverse light 12v and ground to a CCD prius camera (eBay)
- Connect another set of wires to a 12v-to-5V converter with micro-USB output
- Hook-up a TP-Link WR703N (flashed with OpenWRT) to micro-USB
- connect an RCA-to-USB adapter to USB
- connect the CCD video output to the adapter
- Install additional software on OpenWRT to stream video

Everything should only come online when reverse is on with hopefully a fast boot on OpenWRT then unlock the phone, access the little shortcut to open the webpage accessing the router ... done
Plain CCD+Monitor is AUD$40, with wireless AUD$60-70 ... this one AUD$75
Minimal cabling, minimal electrical work, easily removable and increased geek factor ... or is it just plain crazy?