If your are truly chasing stock restoration the car should be painted single stage acrylic enamel.... But there is zero chance I would seriously consider that... QQ1 is metallic & metallic single stage can't be color sanded & buffed... It's also difficult to do spot repairs..
So, BC/CC
I don't know where to have it done in your area but down here we have a place that glass beads car bodies then seals the car completely in a powder coat primer.. The great thing about powder coat primer is it is electrostatically drawn to the car so it finds any bare metal & seals it... Nooks, crannies, inside frame rails... Originally I had concerns about how well the paint would bond to the powder... I have a buddy that had it done 12 years ago & the paint is still flawless..Another guy had his car done last month & to do the whole car, top/bottom/inside/outside/engine compartment/trunk blasted & powder coated was $2100.00.