10/10 draft spot in a Keeper League

So I have the 10th pick in a 3 Keeper, 10 team league. .5 PPR, (QB, RB, RB, WR, WR, RB/WR Flex, TE) other than that pretty standard scoring. I'm keeping Megatron, AJ Green and Stafford (frick Josh Gordon). By the time my picks at 10 and 11 roll around the RBs that will be available will be:

Possible, but pretty unlikely:
Morris or Martin

More than likely available:
Stacy or Reggie (Don't know who this person is keeping yet), Spiller, T-Rich, Gore, Ellington

Will be shocked if not availble:
Matthews, Jennings, Tate, Gerhart, S-jax, Gore, CJ?K, Rice, MJD so on and so on, you get the general idea of the talent around this range.

Now, with that said, There is a slight possibility 1 of Demaryius, Marshall, or Julio falls to me at 10. So my question being, If, hypothetically, one of these WR does fall to me, should I take one and pick a running back at 11? Or do I shore up both my running back spots at 10 and 11 considering the value that'll be there at 31 (NOTE: I traded pick 30 away last season)

Now obviously if all 3 of those WRs are gone I'm going RB/RB. My thinking is that a starting platoon of Mega, Green, and Demaryius/Marshall/Julio would be too good to pass up, even if my RB2 spot is weaker than average.