Should I trade away Baron Davis for either Kevin Garnett or Shawn Marion?

I have 4 Golden State players (Baron Davis, Troy Murphy, Monta Ellis, and Andris Biedris) and Baron is currently injured. I am pretty stocked at point guard (I have Steve Nash) and I am also stocked at Center (Wallace and Okur). Or should I just wait until Baron Davis heals? He is pretty injury prone but this year has been his best so far. If anyone could give me some advice, I would really appreciate it.