Seems to me like this is the time to start Jennings. MJD will work his way back, but for ow Jennings is gonna get a lot of touches in a team that runs the ball as much as anyone.
Ridley I like, and Bellicheat says he will run the ball more this season, but Patriot running backs are usually not a good play, so I would take a wait and see approach on that front.
My advice: Start Jennings this week, as this is his big chance, and re-consider the question next week after seeing how MJD looks and how Bellicheat calls plays this week.
Here's mine: viewtopic.php?f=19&t=518438
QB: R Griffin III, A Luck
RB: A Foster, F Gore, T Richardson, K Hunter, M Hardesty, A Green
WR: V Cruz, M Austin, P Garcon, S Moss, B Hartline
TE: J Witten
K: Matt Bryant