Haha. 2 + 2 sounds awesome. Got any pics of your set up?I use 3 at work plus the laptop screen for my work machine (yes, it runs them all fine) Occasionally there might be another one or two above them depending on what I'm up to.. it's not like me to only have one machine on my desk.
At home I have a stand that runs 2 + 2 monitors. My desk is a little small, so I had to go up :p
I don't game, so that probably helps with performance issues!