Well, I'm not sure why MIN was available, but I'd say they were a good add. With the RBs you've got, you don't really need Greene. I've got Brown, Mendenhall, and LT, and start two: Brown and Mendenhall for me this week. If I had Gore and Ricky in the mix, like you do, and had to start three, then I'd start Gore, Brown and Mendenhall.
I'm not thrilled with Mendenhall this week, but LT has been incredibly disappointing. Ricky is too inconsistent for me.
Hope that helps.
12 team, H2H, Standard Scoring (Starters in bold)
QB: P. Manning, Luck
WR: Julio Jones, Welker, Alexander, Hilton, Shorts
RB: Rice, Wilson, BJGE, LeShoure
DEF: DET, SD