Handcuffs for Playoffs

I’m locked in for the #1 seed in my playoffs which start Week 13. Should I keep my current bench which has top end handcuffs but I don’t own their starters (Pollard and Mattison) or should I drop some people to pick up my current RB handcuffs (Mostert, Ty Montgomery, and DeAndre Washington)?

Current Roster:

Russell Wilson
Josh Jacobs
Tevin Coleman
Michael Thomas
Julio Jones
Le’Veon Bell
Browns D/ST
Jake Elliott

Bench:
Pollard
Mattison
Miles Sanders
David Johnson
Curtis Samuel
Eagles D/ST
Carson Wentz