Lookin' good, Walt!
109 images at 0.005" does seem like a bit of overkill for this subject, but that could just be because I don't know how big the subject is. I did one that looks superficially similar in 46 images at 0.015",
here. Yours may be quite a bit smaller, in which case your numbers may be just perfect.
I'll risk a reminder that if shooting or processing time is an issue, it's often worth running some setup experiments to see how exactly what you can get away with. When I'm in a new situation -- either subject size or lens -- what I do is to experiment with aperture until I figure out how far I can stop down and still get the resolution I want, then I take a short sequence with fine focus steps to figure out how far I can step and still get everything sharp in at least one frame. After I know those two things, then I figure out how long the real sequence is going to be. If it's tolerably short, I shoot it; if it's intolerably long, I go back and rethink whether to stop down farther (thus losing resolution), or perhaps lop off some focus range.
Switching subjects, which CombineZM options did you use on this?
--Rik