Draft and Trade Talk Message Board

In my league I get to pick THREE players this year so who should I keep. my team is

Billups den PG
Artest hou SG, SF, PF
Miller Min SG, SF
Marion Tor SF, PF
Scola Hou PF, C
Dirk nowitzki dal PF
Yao Ming Hou C
Troy Murphy Ind PF, C
Horford Atl PF, C
Salmons Chi SG, SF
Stojakovic No SG, SF
Brewer Uta Sg, SF
Kaman Lac C
Pau Gasol Lal PF, C

I am thinking that I should keep: Gasol, Dirk, and either Billups or Yao

what you guys think