Welcome
@DrDurdle, and congrats in advance on your new toy!
Based on your described planned usage, I think the Crafty will be fine for you. 2 things to consider though re a switch to a Mighty; is your described usage solo or with others? If solo, the Crafty will do fine, I think. Also, regarding the app, I find the presets suit my needs. But obviously, the Mighty is adjustable without an app. For me, I prefer the Crafty size, and that it can stand up on its own. And I'm not bothered by its shorter battery life.
For smaller loads, you can use the liquid pad as a spacer that comes with it. I prefer using a regular size pipe screen in its place. Just cut a wedge out of it so the screen looks like pac man. Pull the edges together to form a small cone, and press it on top of your load to act as a spacer. Many here prefer the loading capsules to micro dose, but I don't have experience with them. All these methods work.
When you get your Crafty, give it a full charge. I don't remember it needing a burn off.
Hope this helps!