I'd stick with traditional bodybuilding, but with a full body, HIT routine. Not HIIT, as in high intensity interval training. But HIT, High Intensity Training along the lines of Dorian Yates. You will definitely work very, very hard if you want to. Plus this training style is adaptable to losing weight and gaining.
Crossfit offers many potential for needless injuries performing complex exercises at unsafe speeds. But you do get to do kipping pull ups and look like a flapping fish. Plus you get to join a cult of high calf socks and other expensive gym neon colored wear that adds at least 5lbs to your lift each week so you can prematurely injure your rotator cuffs doing olympic lifts you don't really know how to do, but you're doing crossfit so you automatically know how to do these things.