I would suggest getting it powdercoated, but do an OA bath first and do framesaver afterwards.

Just be aware that powdercoating can be pretty thick, and will make installing things on the frame a PITA.

It can turn into a money pit if you decide to get a new headset, BB, etc... Possibly need to have the surfaces faced because of the powdercoat, but you will end up with a new bike, essentially.