multi-boxing software solutions (keyclone) can also keep your costs down. instead of paying 5 * 1500 ($7500) for your setup... you can get away with 3 machines... one in the middle for your main, and a left & right setup running 2 each in split screen. 3 screen total. that brings your hardware cost down to $4500.. saving $3000.

some people run 3 per box... dropping costs further... adding more boxes as they can

also, remember to 'recruit-a-friend' for your clone accounts... saving you at least 4 months on your main.