If I were you, I would give a bit more thought to the Futura133, but even that is on the big side considering the use of only an 8.5 sail.
With a ceiling of an 8.5, you really might want to consider even a smaller Futura. Still though, you're a much heavier guy than me, and you may prefer more volume. Another thought might be focusing on the Futura 133, and to consider looking at a much larger sail to help in light winds. The advantages to boards so wide is that they can easily handle larger sails and fins.