I believe you can flip the Nine's levers over (99% sure you can)
We have to flip the Hayes Stroker's over on our Cubes at work cos they're sent out continental style (brakes levers on the opposite way to the UK)
I used to have Nines on my 1st Orange 5 & as far as I can recall they looked to be flip-over-able.
If there's a logo on both sides of the main lever body then that would suggest you can flip em over
Calliper should just need the right adaptor for your chosen rotor size to work on the rear