Need help on who to Drop?

In a 16 team full ppr league I have a roster decision to make and I need some help. We play 1 QB, 1 RB, 2 WR, 2 WR/RB, 1 TE, 1 K, 1 DST each week with 4 bench spots (13 spots total)

Current Roster:
QB - Rivers
RB - Hunt, Gurley, Mixon, A. Morris & McFadden
WR - Evans, K. Allen & Devante Parker
TE - J. Reed & ASJ
K - Succop
DST - Arizon

With Rivers, K. Allen on bye and Reed doubtful to play this week I need a QB but have to drop a player from this group. Its pretty much down to drop Rivers, Reed or a Dallas RB to fill with an available QB (Goff, Flacco, Stanton, Cutler, or Brisset) Rivers will definitely be picked up off waivers if I drop him. I’ve thrown out many multi player trade proposals in a league that rarely trades and have been rejected on all. Any help would be much appreciated. I’m at 4-4 and hanging on to the #8 spot, last playoff seat at the table.