we have checked its just powered leaves, looks worse in the pictures, more to followLooks a good base to start from, but have a close look at the roof trailing edge and the area behind the hatch hinges, mine was quite bad in those areas.
I think a good sanding only, looks worse in the pictures it's really solidlooks like you craving on with the strip down are you planing to get the shell media blasted ?
Derrick