30" here too, I'm sort of ashamed to tell you the point size of my fonts, but it works out to 141x42, screen about 2' away. I sent out a tweet about your project, hope it will get you some signups.
I'm terribly old-fashioned and use vim for development. My monolithic window is iTerm2 which allows for split panes. It is pretty nice with my laptop screen below for reference material.