Imho, your current mix is perfectly reasonable, at the "high end" for MAA. "Billmen" is more of a catch phrase, to most students, I'm discovering. How literal the unified existence and deployment of "billmen" ever was remains arguable. And if so, when or at what point were "billmen" organized as such? My theory is that the increased presence of "bills" (guisarms of all variants) shows the decreased use of the warbow. I've even referred to "billmen" as "failed archers", but that is probably an extreme pov. No doubt, some archers opted for the hand weapon over the missile weapon, and it was permissible. So having a lot of "billmen" could be seen as mostly men who used to muster with the longbow (if not the warbow, i.e. the most powerful draw weight weapons) but no longer do so. That would make your "archer" percentage larger. I understand that the term "archer" is applied even to men who appear on the muster rolls without bows and arrows. Perhaps someone here can point us to a source for that snippet from my memory?...