Like you, I find the NF Meteors one of the most attractive of the bunch. You certainly have a fair bit of work on there - any chance of getting it back in the hangar for a bit? Or even part of it?
Personally, I'd take all the paint off, and back to bare metal. Unless you do, you wont be able to see what is hiding underneath. Internal condition suggests there may well be corrosion coming from the outside in.
I always fancied a NF Meteor as a project, but I don't think there are any potential candidates left.