You should keep the Snaxo away from powered boxes. I’d put in under the 282 and move the Linn down a shelf. Just put the Hicap where the Flatcap is. If you don’t want to move the Snaxo up, at least put it on the left of the shelf so it’s not immediately above a 250 transformer.
I would be keeping the 282 on top, as in your photo.
I wouldn’t put networking equipment on the HiFi rack. Stick the switch out of the way somewhere and free up some space.