Personally I'd never do any painting inside my garage. Overspray goes everywhere/anywhere. It will attach itself to everything.
What does not becomes very fine dust that'll travel everywhere.
Keep in mind you cannot even see this.
Got kids & pets, paint is very nasty stuff and just would not do it in an attached garage.
I'd build something outside or as suggested find a booth rental etc.
Check for inflatable paint booths as well, there maybe someone in your area that rents one out.
'88 GW (aka Babywag) and '90 GW (aka JUNKbucket) both fuel injected
1994 Caprice wagon