I have crystal pearl black as well.
The week I got my car, I waxed it with Fusso Coat 12 month coating then top off with dodo juice Purple Haze and  supernatural hybrid. I prefer to wax myself instead of sending to a shop to do it, but this is provided that you have at least a DA polisher with you. If you want to wax by hand only, I suggest you send to shop because hand waxing very difficult to get rid of swirls and scratches.

Black very easy to get water spots so I usually wash my car at night to reduce the spots. If raining in the afternoon then you best have a quick detailer spray and microfiber cloth with you in the car so that you can wipe off immediately. You can also go for coating but it's not a guarantee that there will not be scratches, swirls, chips or watermark as the coating degrades. P.S:  I use meguiars shampoo plus with 2 bucket system to wash my car weekly.