Hi bud.
also 5 8. 13 and half a stone. brung up on lee enfield 303 and 762s.
came to airguns and went straight to BSA superstar as it was almost the same weight.
stayed off light ones as i remember my kiddie ones. the paratrooper etc.
then got into pre charged and TACs. loved em. easy to carry.
now looking into co2. SMK have a couple of full blown hunters. i am also into homebrew so always have capsules to hand.
how will it fit your hand. i have fat fingers. an AA400 seems small to me. but it works for me.