I'm not quite sure how to do it, and in a face to face game, it could be done with a quick back-and-forth, but I think it shows here that the main areas to improve the encounter (and any like it) with have to be a matter of clarity to timing - both in checks (and the number of them) and in actions (what counts and what doesn't when it comes to taking your turn).
I recall times when you asked me if there was anything else that I'd like to do, because what I posted didn't quite take my turn, but it sounds like there were also times when you edited our turns down (which is fine, of course, but it wasn't always clear). I'm also not 100% certain that we would not have attempted to stay one more round, for example, had we known that we'd left some things undone.
Again, this is all mild (hopefully constructive) criticism, and the encounter was overall great, so I'm not really complaining, just observing a few wrinkles.