Ryan/Smith/Brown/Morris for Marshall/Gore WHIR

[GenericUsername]

ESPN PPR head to head league, with a buff to points. (5pnts for every 10yrds pass/rush) 6pnts for TD regardless. Start 1 QB, 2 RB's, 3 WR's, 1 TE, 1 K, and 1 DST

I plan to trade Matt Ryan, Torrey Smith, Alfred Morris, and Donald Brown for Brandon Marshall and Frank Gore. Is this a fair and good trade?

My Team:
QB: Aaron Rogers, Matt Ryan
RB: Darren Sproles, Kevin Smith, Ryan Matthews, Donald Brown, Alfred Morris
WR: Greg Jennings, Jordy Nelson, Percy Harvin, Torrey Smith, Robert Meachem
TE: Rob Gronkowski, Fred Davis
K: Robbie Gould
DST: Ravens

His Team:
QB: Ben Roethlisberger, Josh Freeman
RB: Arian Foster, DeMarco Murray, Frank Gore
WR: Roddy White, Brandon Marshall, DeSean Jackson, Vincent Jackson, Erik Decker, Anquan Boldin
TE: Vernon Davis, Jared Cook
K: David Akers
DST: Bengals, Bears

I'm leaning for Marshall more than White since White has to split touches with Jones who's a younger, and more explosive. Also, Marshall has already played with Cutler and there's no other WR that can really compete with him. He's not going to give up Murray without a really good trade option that I can't give up. Is this a good trade for me?