[Jay]

Pettiness and jabs aside, the first suggestion seems best. +10 body weight as a foundation on top of your strength seems fair enough. It's just an arbitrary number that translates to whatever you want to (reasonably) make of it in-character. Certain outdated items like the Kigal could use some inspection. That item in particular weighs a bit too much for a magician's conventional use, even if floating is a thing.