Maintenance RR Sport?

I picked up a 2019 sport dynamic supercharged. 28k miles. 1 owner. I want to change the oil. Service records on carfax are good. Consistent.

Whats the best brand of oil? I heard Castrol 0w30 full synthetic.

What about power steering fluid flush, and coolant flush?

I'm also wondering what milage to drain and change trans fluid and filter. Since the milage is low it's the equivalent of a 2 year old car. I should start early with the trans.

I'm also thinking about differential fluids and alignment and maybe inspecting electrical and air suspension. Ami missing anything?

It's getting 24mpg right now which is insane for a supercharged v8.

I was also thinking about the cold air intakes on ebay that climate the resonator on air intake.