Hi Bud, Generally speaking, I would use a 6-10kg outfit for Kings inside the bay with say a penn slammer liveliner 560 or a 4500-6500 shimano baitrunner with about 30pd braid.
Would use about 60pd trace.
Use a double snell rig.
The majority of kings you will catch inside the bay will be rats, or up to the 5kg mark from past experiences. I rarely ever get ones bigger, so I dont fish much heavier than this so that I can enjoy catching the fish that bite the most.
Rod, reel, fins braid will probably set you back over the $300 mark, however half descent gear is important.
If you prefer overheads, try a Shimano TLD15 or 20.
Its just my opinion so no hard and fast rule. If you get bigger kings, this gear will struggle to do the job however and you would consider stuff like TLD25s with 50pd braid etc at the cheaper gear range.