Well, my take is that it's the first order of business to get the thing in the air. I think we all can agree on that.
Once that's done, if you're going for a military scheme it takes almost the same amount of effort and cost and cans of paint to paint it inaccurately as picking out a nice "accurate" scheme and doing it that way ... why bother doing it "wrong" if you're going for a military paint scheme? If you're intent is obviously a sharp civil scheme, as with the nice Mustang paint jobs of years past, then go for it ... some of those P-51s were very attractive!
You can't tell me good reference info these days is hard to find, or that historians like me won't go out of our way to help - I've done so for a recent Mustang restoration. I have no idea (yet) if they used my info or not, but I got an email a while back from a prominent restorer, and I was asked about accurate 4th FG schemes. I supplied "best known" info and let them decide - but the point is if paint is applied, it takes little to no additional effort to "do it right".
I've seen the shots of the Duxford Fw 190 ... hell, it looks good to me, and I haven't researched it, but if the markings are "inaccurate" ... why? I have a hard time believing a person who obviously appreciates these machines would put that much money on the table to obtain a rare (even if it's "new-build") plane, just to "make up" markings (if that's what they did).
And, forget any potentially "significant cost" of carefully applying the paint "perfectly" and "accurately" ... if you can afford the ride these days, a more costly paint job shouldn't faze you. It's not a zero-sum game: you
can have a beautiful machine painted
accurately with hardly any bother.
Hey, sure, I understand and appreciate the fact that
you paid for it with hard-earned dollars out of
your pocket, and the machine is
your property to do as you wish, and at least for now
you can paint it any way
you like, but don't expect
me to oooh and ahhh when you taxi by ... if that means anything to you.
Wade