That is pretty savvy. I have a keeper league too. But bench space is only 6 deep. Hard to hang on to someone like that for the entire season without it dragging down your roster. I'm sure someone will pick Henry up after they are eliminated though.
My starter is currently Winston. Ppr. Drop Dalton for one of these 3: M. Mack, L. Murray, P. Barber?
Other RBs: Hyde, Ingram, K. Johnson, Cook, Duke.
I'm also considering dropping Duke for one of those 3. Fourth in the waiver wire