Full wipe man. Always the best policy.
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with cm (and other roms) in the past, once you are on it you can just flash the newest version/nightly and not have to go through restoring everything. otherwise flashing nightlies is too big of a pita.
but i tried it, everything seemed fine except an app/widget was missing and apex was acting kinda weird. probably could have fixed it easily, but i just reflashed with a full wipe.