Okay, first1) It was supposed to be a poll first, but the more I looked (I looked for quite a long time), the more positive I was on something - the poll for "Which one of those I will loop and add sound to first" didn't work because frankly speaking Nekomiya was already fine. (... and I kinda started liking her design when it's with my adjustments in the process)
Pulchra looked better in looping animation (First frames with the leftovers of speech removed). This pic was made when I was still very much figuring out how to work with the new model, and I really like how it looks like it's live2d instead of leaning into 3dness that happens from Wan loras being trained on normal adult videos.
3 - It will be around 22 seconds, I decided on Pulchra