I would be cautious with the simple green. My dad used to use that on his wheels until he had a Chevy with painted wheels that faded over time.
As far as cleaning the wheels, soapy water with a sponge/microfiber mitt or whatever. I have a different one I use for wheels so none of the brake dust could get in my sponge that I wash the paint with. I just wash the truck then the wheels after.
I don't know if those wheels are the same gloss black as the 962s, but I have a friend with those and they're very prone to swirls. I would be cautious to only use perfectly clean towels, and make sure the sponge you use on them is extra clean as well.
If you absolutely have to, a wheel cleaner will work. I've never had wheels dirty enough to really warrant anything more than soap and water like the rest of the truck.
For protection, any wax or sealant that you use on the paint is good.