salam bhai
as people say black or other dark cols are difficult to maintain but i would say white colour also need proper attention to keep its purity and whiteness as usualy white goes to pale if not care properly.
what budget u have for ur white fairy ?
i would propose u economical package
armorall shampoo
turtle swirls and secratch remover
turtle ice synthetic polish ( actualy its wax and not abrasive )
about compound well can only suggest after seeing car pics but detailing principle is first use less abresive product
( chrdyia ko marne ko airgun hee kafi hai so why use 3g rifle ? )