The Cheshire Cat is not a new design. The Quattro 14 is also not a new design. Both of these are advertised in the 170lb range.
Rick White's Hobie Wave has a 20' mast, a 7' beam and no trapeze. He uses 187sq.ft. of sail and does not seem to be overpowered by it. Besides, a quick pull of a line and all that Hooter rolls up to tame the boat. I cannot see why an 8 to 8.5' wide boat with a 24' mast and trapeze system couldn't easily carry 200 sq. ft. max.