Cheer’s for the plug.
You have a very similar set up to mine. I am running 50lb power pro on a 12ft power play spooled on the AX90. I do a lot of rock fishing for the Kingies with this combo, it would be one of my favourites at the moment.
I would actually still use mono if I was only using the combo for surf casting, due to wind knotes that can come with braid when doing big casts, those tapered leaders are the best idea, but the braid with a shock leader does do the job for me, and one does need the higher braking strain on the Kingies.