I have the desktop height at the level my hands would naturally rest at if my arms were bent less than 90 degrees (so the interior elbow angle would be about 10

I have the desktop height at the level my hands would naturally rest at if my arms were bent less than 90 degrees (so the interior elbow angle would be about 100 degrees or so). My arms are resting comfortably at my sides, so the motions my hands make for typing/mousing are comfortable. I'm thinking of an Ergodox to alleviate some wrist rotation issues, but that's nothing to do with the desk. Do note that for some reason, in standing mode it is necessary to have the monitor higher so the head isn't looking way down and hurting the neck. When sitting, this isn't as much of a problem. However, I spend most of my time standing, so I have the primary monitor height such that I'm only looking very slightly down. My eyes are even with the upper third of the monitor. Also, it's important whether sitting or standing to not push the monitor too far away. That can lead to hunching forward or craning the neck.