Kahr CW9 here as well. It's amazingly thin yet still fits my hand nicely.
A Glock 36 chambered in .45ACP, with Meprolight night sights, Pearce 1+ round extensions for the magazines, is an extremely good setup. A good Kydex holster, or a reinforced leather IWB holster, makes for a good carry package. Once you’re comfortable with shooting the Glock (put at least 500 rounds through it, and definitely plenty of hollow points, because you want to shoot what you carry,)you can check out companies like Lone Wolf Distributors, who specialize in upgrade accessories for the Glock product line.