Positions are down, but as of order, this is the best I can see right now:
3.Ben Grieve-RF/Wes Helms-3B/Geoff Jenkins-LF
4.Ben Grieve-RF/Wes Helms-3B/Geoff Jenkins-LF
5.Ben Grieve-RF/Wes Helms-3B
As for prospects coming up, J.J. and Weeks have the best chances at coming up this season, while Fielder and Junior probably wont come up until 2005. 2006 would be the latest.
Pitching looks like this right now: