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That's what I purchased, so I certainly hope so. All the ones I've measured so far were 8.5mm so the 9mm metal is a good fit.

Auto level is going to require a printed bracket. Personally, I don't use auto level. I try to get an actual flat build plate. Octoprint is the same as any other printer. Install it on a Pi and connect it to the printer with a USB cable. Nothing difficult there.