I went for the fully completed 339 therefore....that is if Anton starts to reply emails, my dealer has not heard from him since the Chinese Holidays started.... The paintwork (i have seen the completed one) is truly a work of art, I guess I cannot get even close....

I spray painted many models and I did not succeed in getting everyone 100%. There is always an area You overdid, (especially near sections where the stab or wing meets the fuse) thus getting drips, or when removing tape and it sticks to fresh painted stuff, or the ONLY fly in the garage that decides to rest on the last paintlayer...
There is a long and steep learning curve with painting. It is not that You have to buy all equipment, if it were only that easy.... At least You need also an area that can be used for spraying, that means: heated, lighted, ventilated....plus a friend who has good experience in let's say painting cars!
I made myself a steel "grill" in which I can alternately fit in a fuse or wings to get an optimum angle for spraying, and helpful tools to hold all small parts etc. Preparation for painting takes a whole day for me......

Btw some shops sell those air compressors with a complete "set", including a spray gun. Give that one right away to Your children for water fights in the garden, absolutely rubbish stuff normally! A good professional spray gun will set You back over 500 U$....

I gues You should shop around more and get some more price proposals. Delivering a model well sanded and prepared for painting saves them a lot on hours.