I am also interested in the neck width question, especially at the nut. I’m assuming that in order to make the kits efficiently, there is a standard jig size for all or most necks. I’m leaning toward getting the cello banjo kit, because I want a wider neck and cello banjos are usually wider. I saw on the forum that the nut for the minstrel banjo is “non-standard in every way” but I don’t know if that means wider or narrower.