Gotcha, usually glazing putty is only used for pin holes, i assume you just meant youre using glazing putty right now over the filler, is it just air dry stuff? Are you just using a rattle can primer?
If you're gonna have a shop spray it let them prime it to, stay away from rattle cans as much as you can, they'll laquer check on you. You want a 2k high build primer. It'll be with every penny for the shop to do it
My uncle and I were going to try painting it and if it looks bad then I will do a flat black- cant really mess that up.