Newly done sorcerer/Master of possession

Heading to arcfest this year and decided my list needed a sorceror in it! Trying to figure out if I just run this guy as a MOP or a sorcerer. Sorcerer would have 5 chosen with him playing mid board OOOORRRR I run him with 10 possessed. LMK what you think of the conversion and opinions on the list!

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