RE: Concealed carry considerations
IMO the 3 main considerations are reliabilty, size and weight.
Revolver or pistol is a personal choice.
I wouldn't go with too large of a round in a small lightweight weapon. 380 or 9mm in a pistol or 38Spl in a revolver and stoke it with +P ammo. Regular ammo for practice and +P for carry. Most incidents where a CCW would come into play are very close range. Practice and familarity is the key.
A CCW does you no good if it's sitting at home because it's too cumbersome to take with you.