Looking to add a P10 Matrix to my show. after doing research I have the following questions.

I'm using Raspberry Pi2

I plan to use Ron's Matrix Board
I read the max distance from the Pi board to the Matrix is a ~ 2m? so are people running 2 Pis?

Ron's site states the board drives up to 12 panels each, is that per each of the 3 outputs or 12 total for the board?
If i'm running a 6x6 36 total P10s what is the best method to drive them?

Ray Wu P10 panels are 1/4 Sac. Anyone using these?