If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
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It seems badly defined. It's not clear in what sense you could be an octopus.
What does seem to be possible is adding extra arms and limbs. Our brains seem to be capable of integrating new things. But even if you would be given 8 tentacles that wouldn't make you an octopus.
I think being an octopus might be something like having an octopus' motor and sensory systems while still having my memories. A really Friendly AI should be able to figure out how to do that. Harder or easier than CEV?