3 Shamans, Keyclone

I have been playing 3 shamans using keyclone. Everything is working smoothly. I have them setup to follow the main shaman and they use an assist macro to target. Each spell bar is setup primarily the same.

I only have one machine and keep three windows up. I run each window at 1440x900. I cascade each window so if I do need to control a specific character I can easily select them by just clicking on their window. My FPS is generally not a problem. At times I have to make the "trailers" (the following characters) look down at the ground to improve performance of the main window.

I read about all these setups and I wonder why not just use the setup I have. If FPS becomes a problem then I'd improve the video card. If desktop space becomes a problem Id buy a 28" monitor. Am I not seeing the disadvantages to my setup?

You'll probably see better performance by minimizing the trailers.

This is very similar to how I 3box, however I use two monitors and Maximizer to resize the two additional windows down to 640x512. I plan to try 5 boxing once I get my 7900gt back from the shop (hell, hopefully it's not a 7900gt anymore and something beefier ;)).