As a man who has personally experienced different set ups of multiple monitors at once for several years now, I suggest four 22''s of your choosing.
Four is just way cool.... lots of people have 2 (size doesnt matter, people still have 2). So do something damn near no one does, and say you can have 4 since its sounds like you would utilize the space.
Oh, and your avatar is hell-of annoying.
Oh, and get a bunch of Bala sharks and silver dollars. Bala sharks are freaking cool. I have two personally, in a 30 gallon take with 3 silver dollars and lots of itty bitty fish.