if you're having everything else sprayed why don't you get the roof done at the same time otherwise it'll be a mismatch?
new paint... needs time to harden - 90 days - do not wax or seal or polish your new paint during this period
your new paint will not need claying during this period
imo the best thing that you can do is a regular Two Bucket Wash - twice weekly... to keep the paint clean and fresh and preferably swirl free... for details on a TBW see sticky thread above. make sure your new lambswool mitt that you will be purchasing is uber clean all the time.
once your paint has hardened
after 90 days then clay, polish, seal and lots of hard wax