I'm proposing midnight on Sunday the 24th as the deadline to A) have your players added in yahoo, and announce your cuts, and then a March 1st start to the waiver draft. Remember that you can keep a total of 32 players, of which 18-22 must be MLB assets.
Prospects may be kept on an MiLB roster until the following MLB conditions are met:
Hitters: 500 career PA
Pitchers: 26 career X [where X = GS + 0.5(relief appearances)]