New board for a big guy

[pns72]

Hello,

First off, I am about 240lbs. I currently have a Rio L with a Sailworks Retro 6.5, Gastraa Pilot 7.5, and a Retro 10. The area I sail in has winds in the 10-20kts range and choppy (bay). I'm getting into the harness, footstraps, and on a plane fairly regularly (yeah!). I can also beachstart in chest deep water most of the time . The problem I'm having is that when the wind and chop are up, the Rio is a bear to handle. I would like to know what size/type board would be good for me to progress on in choppy conditions.

Thanks so much,
Pat