Why don't you become a car lover.
Clean and protect your cat at home
Coatings are very good if you take care of them but what I think is they are not value to money if you can apply a wax on monthly basis.
Other than coating ppf is a good opt.
I think you should make some car care setup.
Like a nice shampoo, wheel cleaner, apc, interior protectant, fabric cleaner, sealant/wax, polish.
Some microfiber towels and a bunch of brushes.
For looks a carnuba based wax like tac system shinee is a very good option.
For durability of four to five months in pakistan fusso coat is a very good option.