For your height and weight, I'd definitely recommend something 13ft or longer. Any shorter and you're gonna feel chocked up.
For rods, the crucial inshore rods are great! I've got a med and a med/heavy both 7'2" and use em for inshore and freshwater. I'd say around 7ft (give or take a few inches) is a pretty versatile length for doing a lot of things with the same rod. If you're limited in the number of rods you can own, then stick with that range.
However, I also have an old calcutta spinning rod (unfortunately discontinued) that's only 6'6", some might say that's too short but I've got long arms and can still lead a fish around the bow of my yak. The shorter length (particularly the short butt section) also allows me to work a plug more easily and give it some crazy action.
At the other extreme, I have an 8ft medium action teremar that I can cast gold spoons and big topwaters out a friggin mile with! The downside is that the grip is a little on the long side for giving a lure a lot of action, but for things like spoons and spinner baits, that's not a big hindrance.