I would stick with what you have.
Moss is talent, but he is a A$$
Vikings'are self destructing
Culpepper/Moss connection is not working
George will get you more points week in and week out then Moss. Pittman will score just a little more than Driver this year.
My opinion is not to trade.
*I like the factor that you have 3 stud RB's just in case one goes down you won't have to panic.