After thinking about this, my answer may have sounded a bit smart alec,, for that I hope I didnt offend?
I also thought to look, your in Australia, so BOM and such dont apply like here.
I fear it may be a challange to get someone who knows about models to paint it for a reasonable price, there is a lot of labor in making a plane nice, and light both.
A motorcycle paint shop may do it, but again, lots of money, and they wouldnt understand about the need for lightness,,,