im a daiwa person myself, and use a saltiga z4500 and saltiga dorado 80tn rod, for kings mainly.
I can't say enough good things about the rod. An absolute powerhouse, and have seen photos of saltiga rods under so much load high sticking, the top grip has a visible bend in it! Worth every cent and more.
But with the reel, each time i use it i wonder where the $945 went. Its a great reel yeah, but where does the money go? If i was to buy another reel, it would probaly be a Shimano Twin power. Its a big jump from a Spheros to stella. I don't think there is much in it between the Twin power and stella. Twin power has my vote for you.
Regarding the 30 kg max drag, shwartznegger might be able to fish with it, but who else? Ive had my setup dead lifting 8kg off the ground, and there is no way i could fish with that all day.