James White, Ebron, and Hogan for Keenan Allen

I was just offered this trade.

My team would be

Lesean Mccoy
Antonio Brown
Keenan Allen
Brandin Cooks/Funchess
Rams D

I would have no other RBs on my team and am in a 14 man league so not much on waiver wire. What do you guys think? I want to accept but just nervous about RB depth