N4+ improvements

I have a N4+ and it's running great, but there's room for improvement. Running official firmware, had to update once early in the year to fix the z offset issue, but no issues since then. I do have the eMMC adapter for when I change to custom firmware.

I have silicon spacers already, very useful to have. These should just be stock from Elegoo.

I'm looking at the Beacon 3D upgrade for automatic z leveling. I see they have the regular and the lower profile version. Anyone know which is the best fit for the N4+?

I know there's a few filament changing systems out there to enable multiple filament use, but not sure what is compatible with the N4+. Any recommendations?