I agree with some of the earlier guys but I also look at it differently:
1) The day of running backs winning the league is over....I have a team that is WR stacked and I have yet to lose.
2) If it isn't dynasty I would pounce because Randy Moss is starting to get in stride.
3) It is hard to get rid of Rice but you are fine with the other guys. In the scoring system you have without PPR guys don't have as much value unless they score a TD....and none of your guys, sans MJD, will score consistantly.
I would do it unless you are a dynasty team.