We have a 9 man rotation regardless if Williams or Sarr are eligible.
Mintz
Clarke
Boston
Brooks
Jackson
Askew
Allen
Fletcher
Ware
And yes I realize you said Killer 8 man. Just saying Fletcher and Allen can give 8-10 quality minutes IMO.
Start getting too many in the rotation and it effects the flow of the game and your top guys start to lose minutes.
I think one of Ware and Jackson emerges as the primary backup at the 5 by SEC play. I see Cal giving one of them 10-15 minutes a game instead of giving them both 5-7 minutes each.
As for Fletcher and Allen, they are both in for a fight to get minutes, IMHO. I see them being out of the rotation as Cal tightens it up in January and February.
I see a rotation looking like this for late in the season:
PG Mintz(30)/Askew(10)
SG Clarke(30)/Askew(10)
SF Boston(30)/Williams(10)
PF Brooks(30)/Williams(10)
C Sarr(30)/Jackson(10)