The reason for just wanting one single cable going to the DPF is because i want to make the actual frame as slim as i can. Nobody likes a 1"+ off the wall sticking out.
Each board will connect to a separate panel. So i will have 3 boards in total.
The other way around is that i can house all the power, board and whatever else at the power source(floor, behind something) and just have a custom DVI-i breakout pcb made just for the lvds cable(being the DVI-i cable) going to the DPF. But like you've and others have said, it will be tricky yo get the lvds to stretch that far.