If you fallow that route, there should be a setting for iTween like “cullable yes/no”, basically, you want to update a lift even if it’s not visible, but you don’t want to update an iTween for a rotating lamp in a room if it’s not visible. So user’s can chose what’s important for update and what’s not.
If you can make this happen you are golden, basically, you remove the limit of iTween objects in a map.