I'm in the same boat as you are. Check out this guy:
http://www.wsibl.net/wsibl1/p3129.html
I drafted him in the June 1st Draft of 2003 at 18 years old and the auto depth chart says he could start...but I don't want to bring him up and waste money and such when he could still develop in the minors. I think I'm leaving him down there until he is 20 or so.