Jabbe - looks wonderful! a really crisp paint job there... looks like it is going to be a keeper!
word of warning though, putting a flat coat over the Alclad can cause a whitish "haze" over your NMF. I'd stick to just the Alclad, maybe a mist shot of future on top after the decals to protect them and give a decent shine to the metal.. if you want to portray any "flatness" to the NMF I would do it very carefully, not in an overall coat..(and not use future beforehand) Maybe you should consider an acrylic "satin" or "Semi-gloss" sheen instead?
If you stick the decals straight on top of the Alclad they settle in wonderful since it is a slick surface, Microsol and Microset don't affect the Alclad at all... once they dry you will see it all blends together without the future/decal/future/dull, maybe try decaling it then sitting back and looking at it a day or two.. just to see if it is where ya wanna go or if you're already there.
BTW: Here's a movie of P-47's kicking butt in Europe:
http://www.ww2incolor.com/gallery/movies/thunderbolt2
Click on the "Flash file" link on the page...