i'm glad i'm not in your league because I use the same strategy
actually i think you've got a solid playoff-bound team. watch that waiver wire for pitchers. I'm not sure you can win it all without another ace, but that can be fixed later in the season via trade maybe...
i wouldn't worry too much about burrell and nevin, there's always a breakout outfielder to be had through free agency. you have the thin positions covered.