borrow some and see what fits your hand. many shops or ranges/clubs have some loaners you can try. you need to be able to hit with it under extreme stress with screaming, crying, etc. going on around you. for that reason, i use a 38 special j frame sw revolver. i imagine one can always remember to pull a trigger, if taking off a safety does not occur unconciously.
just a thought.
just a thought.