The most buffed i can think of would be:
skulltake, 8 attacks, 2 damage each, 3 if the wound roll is 6+
killing frenzy, 2+ to hit
LoKoJ, +1 to wound (extra damage on 5+)
Bloodstoker, reroll 1s to wound.
could also throw in a warshrine for rerolling hits.
thats up to 16 wounds in combat with 8 attacks at 2+/2+/-1/2 and full rerolls
plus his tentacles and extra damage on wound roll of 5+
That is a lot of points to make a super khorgie though