Trade Torain and Jennings for Austin?

14 team 1/2 PPR. I have Jennings, Moss and Welker at WR and Torain, Hillis, Turner and Foster at RB. Start 3 WR, 2 RB and 1 flex. I'm just thinking Jennings may be sweet now that Finley is on IR so they'll get him the ball alot more.