Trade Kerryon + Gurley (potentially) for Kamara?

In a 12-team keeper league (PPR) with 2 RB/3 WR (No FLEX). Every teams keeps 2 players without any sort of round penalty; we keep 2 players and then draft.

I’m keeping Mixon + Kerryon and, through a series of trades last year, have an extra pick in every round from Round 2 until Round 7.

I have an offer out for Kamara but now having second thoughts about it as the draft draws closer:

Kerryon + 1.3 pick for Kamara

Likely best available at 1.3 would be Todd Gurley, Antonio Brown, Damien WIlliams, Keenan Allen. Should I go through with the trade for Kamara or stay put and take a risk on one of the guys listed above + Kerryon?