just because youre 5’11” doesnt mean you should start looking at those kinds of bikes for your first. bikes like full dresser tourers and goldwings are very bad choices for anyone just starting out. i think that before you worry about things like stuffing a complete set of saddlebags full and going away for a weekend you should learn the fundamentals. if youre leaning toward the cruiser side of things then a solid choice for you may be the yamaha V-Star 650, and throw some saddlebags and a windshield on it later. other good choices are the honda shadow series (the 750cc ones).
as far as sporty tourers go, theres hard bags available for the suzuki DL650 v-strom and kawasaki versys that allow you to pack enough in there for a weekend trip easy. hell, yesterday i saw a guy pulling up to a hotel on a DL650 with hard bags, a top box, and a tank bag. all that together holds a lot of stuff and it is most certainly a capable sport touring rig.