update
the bumper is now in primer ready to go off for paint
the first step after all the prep i did earlier was to spray the whole bumper with one coat of plastic primer
and then plastic filler was sprayed over and rubbed down with 600 grit and then 800 grit
and going over any bits again with filler spray that i was not happy with
to get a real nice smooth surface for the primer
then a primer coat was done and again wet sanded with 800 wet and dry
then a second coat was done but this time not sanded back just left alone
so the painter can scotch pad it over to get a smooth key for the paint
so it will be a bit of a waiting game now
but hopefully not too long