God, this is a tough one. I LOVE Forte, but I love Bowe/Austin too. I'm worried about BMarshall with the Dolphin's QB situation, although with daniel thomas emerging it could go either way for him.
I guess I'd do it. Andre Johnson/Bowe/Austin is retarded, and you could just run MJD/Felix and your 4 WR package of Bowe/AJohnson/Austin/AJGreen.
You have Lynch and Shonn Greene who could potentially turn into usefull RBs as well. If this were a standard league with 2 RB, 2 WR, 1 Flex, I'd say don't do it, but since you can go 4 WR deep, go for it, and cross your fingers on Lynch/Greene.
As for next move, I don't know, you won't have much wiggle room after this trade. Mike Thomas/Lynch/Shonn Greene isn't a pretty package to try to turn into a better RB. Maybe try to sell high on AJ Green in a package with Shonn Greene for another RB?
10 Team PPR:
QB - RG3(WSH), CHenne(JAX)
RB - ABradshaw(NYG), AMorris(WSH), DeWilliams(CAR),
WR - RWayne(IND), PGarcon(WSH), TYHilton(IND), DBowe(KC), ARoberts(ARI), CShorts(JAX)
TE - KRudolph(MIN)
D - Texans, Chargers
K - MBryant (ATL)