Another thought, there is a "Spot X" book for surfcasting. The Spot X series are not perfect, but would be a good start. 

Hey Mate

Hope info was useful. Just had a rummage through your web store- there’s lots there that would be decent. Big sluggos were a thing here for kings a while back but they are a bigger to cast from shore esp in any headwind. If you can get the belly weighted hooks it helps . But I would t get too caught up on size- whilst it does matter for the big beasts you would be surprised what smaller lures will yield- esp for snaps trevs KY and even rat kings. Those small 10-20 g fast cast lures in green/ silver red colours will work- I use an light st croix spin rod with a 3000 reel from shore and boat throwing very similar micros and it’s produced well on its day- esp in shallow harbours up north bottom bouncing on the retrieve . Have also used all the Fiiish Minnow lures- incl the sandeels here. The sandeels work well in small sizes again on light gear. The big ones with ultra strong hook jig head (60g+) are the biz off the boat but the bodies get mashed and it’s expensive. They work though. I would bring a few small size fiish minnows in the blue or black (10g) heads…..if you don’t mind replacing bodies. Hard lures I have used are as mentioned above - Nomad- make sure whatever reel you have for kings has a decent drag- drag power is more important than actual size I think-you will want at least 8kg off the bricks the more the better. Anyways that’s my 2c.