I like the sound of the 'Air' series paints. Even though they are acrylic, I might give some a try - on something unimportant of course!
I have the feeling it's going to take some time to get my paint replacement finalised, but, from what I've seen of your Dora Jan, I think that I might use the Vallejo for spraying. It looks very nice, with a good smooth finish.
Should look cracking with the other colours on.