Iggy will get you a Lopez or Horford and a Jackson might get you a Oden or Bogut. Maybe have a crack at Nene with Gordon.
I like Jackson the least as he kills your percentages and Bogut might be okay this year. Kaman and Oden will be around this territory to. Odens value is far lower in leagues that have drafted this year than in the past....if you drafted this year he may be worth a crack but wouldnt bother if you didnt