I'm 6'4". I know your pain. I hit the ball really, really high myself. The best thing I've found to get control of my ball flight was moving into an X shaft with a high kick point. After research and trying some demos, I settled in with a Diamana Whiteboard Flowerband (Older version of the new shaft Ahina). It dramatically improved my flight. I'm playing a Titleist 910 8.5 degree driver but I've got it tuned down to 7.75 (it's adjustable). With the distance you say you're hitting it, your swing speed has to be 110+ MPH. You should be playing an X shaft IMHO.
Here are the specs on the shaft I'm playing, if you are interested.
MITSUBISHI RAYON / GRAPHITE SHAFTS | Diamana D-Series