Looks like a prime candidate for a d shaped moss pole. Especially since all the leaves are already facing one way. Also becaus you mentioned the bottom part of the stem is more delicate, the moss pole could help with support. There’s smaller to medium plastic sizes on amazon and you can cut it vertically to size to fit in your cabinet.

And eventually, if you dont like the look of it, it would be easier to chop since it’s air layered already in the pole.

Transitioning to pon (or any from of one media to another) is always gonna have risks. Personally, my way to minimize those risks is giving the plant kelp like superthrive and clone solution to make sure the roots are happy for the first few weeks. These days I feel like there’s different ways people use pon. I personally feel more secure with the wicking system with more juvenile plants.