I've posted my approach to kingfish before, but here goes. I hook a lot of inshore kingfish on light softbait gear over sand when targeting snapper. They are not huge fish, but well legal and almost never get broken off, so depending on the environment, I don't think you need crazy heavy gear for inshore fish.
Since I fish from a jetski, there are a limited number of rods that I can carry, so make do with one dedicated kingfish rod which I use for jigging and casting. It's a Penn Ocean Assassin PE2-4 and a Penn Slammer 4500 reel (Penn reels are bigger than competitors for size ratings). I'm not a Penn fanboy, most of my other stuff is Shimano, this rod and reel just ticked a lot of boxes. The reel is loaded with 30lb braid. Jigging with a long rod isn't ideal, but it's a good casting setup and overall performs very well.
Just my approach, feel free to ignore, it's certainly not typical of what most people use. If you want to spend more money, go for it
Some fish caught on the setup described this year.