Also, don't overlook those two points per ip. Depending on whether you can make daily lineup changes and whether you have a cap on innings pitched, ip may turn out to be the stat that separates the good teams from the bad.
I definitely like your draft. Konerko was a fantastic pick, and Payton looks like a great call as well. As you said, catcher is a weakness, but with this scoring, finding a free agent catcher might not be as hard as it usually is. You also might be able to help yourself in the trade market by targetting a slugger like Troy Glaus and pointing out his low average to his owner.
As cwebb said, your rotation looks solid, but you'll need a good season out of either Beckett or Brown. Preferably both, of course...
Looks like you have a good foundation in place!