Agree JCJ should be a consistent presence at the 4. Backing him up:
Omot looks 6-8 and 200 in his Cal video's, If they can get him up to 210 he could play small ball 4. A majority of teams don't post up the PF spot anymore. It's one post and 4 out.
Not ideal, I suppose Durkin at 6-7 220 could play there as well. He has a game like Battle, so great scorer, average or below average defender and rebounder. Has an advantage on the perimeter if a PF is guarding him, but we would giving up physical play on the under end.
Grayson Grove is an option if the opposing team is playing 2 bigs.
Getting another PF/C option in case of injuries should be pursued.