Due to the rights issues, Eric can not make an official kit. But he can cut you a set of parts for some custom design you want. Of course, if he happens to have that cut file in his hard drive....
As far as model size is concerned, most designers have not realized that when scaling down, go to the next smaller wood size when in doubt. The Midwest .15 Magician was an overweight abortion. The one I developed was a proper scale down of the original as designed by Jim Silhavey before a couple of kit manufacturers got ahold of it. And I have photos and letters to prove it.
If you want a full size, authentic, original, get my plans scaled up and go for it. But! If you find a piece that is non standard size, go one size larger!!! The opposite from scaling down.