Instead of worrying about who should be active, why not worry about some automatic inactives?
Jacoby Brissett
D.J. Foster
Cyrus Jones
Jordan Richards
LaAdrian Waddle
Those 5 are automatic inactives. Dola may or may not be ready for the divisional round, so that's 1 more potential inactive. All you need is one more guy.
I would inactivate as little as possible from the WR corp. Pick a third stringer LB or something.
You want Edelman, Floyd, Mitch, Hogie, Marty, and even Langell, all active. Keep rotatiting and create special formations to confuse whoever is the poor bastard we're facing, especially a good defense like KC or even the Steelers.