34.
Well Tara, I guess it doesn't really matter what personality a person may have to be a miester, or a weapon, I would suppose the key things to consider on being a miester is to be able to make quick decisions; preparing to wield their own weapon, knowing when using soul resonance with other miesters with their weapons, relying on their own sense of judgement, and so on. Weapons have to protect their masters, no matter what the cost is, while they are depandant on their miesters.
So, the key here is the ability to trust, and to lead mostly.