Keep the peace? This is Fantasy Football, not international diplomacy. Rape and pillage your way to a championship, my friend. Benching these stars and taking advantage of the waiver setup is perfectly fine. What you're risking is missing the playoffs based on a total season points tiebreaker. Check the tiebreaker settings before you make this decision.
I'd definitely do what it takes to get that #1 priority, assuming your current matchup is truly hopeless. And wait and see what happens in tonight's games before you decide who to pick up. You might want Legedu Naanee instead, come tomorrow morning.
12 team H2H league, standard scoring, no PPR.
QB: Cutler, Kitna
RB: All Day AP, CJ2K, F.Jax, R.Brown, S. Greene, Dixon
WR: G. Jennings, Roy Williams, M. Williams (sea)
TE: J. Tamme
K: Hartley, Carpenter