Basically you are going to be off the charts for any board but it really doesnt matter, I am similar size to you and I actually rode a 172 supermodel last year so I know exactly where you are coming from. The supermodel is big and stiff, basically anything shorter you are going to be able to really get ontop of and flex really well. I have purchased a never summer slr 164 which feels like a park stick compared to the supermodel even though most would think its a bit big and stiff, guys our size have a lot more influence over a board than a guy weighing in at 150lb. In my opinion you dont want a really soft board, you just want a shorter board.
I also purchased a 159 sierra reverse crew for goofing around on, aside from being rediculously cheap ($180 atm) this board is very flexible but doesnt feel like its going to fold and snap under my feet like I am sure some of the real flexy boards would. Remember that super flexy boards are designed to be ridden by lightweight guys, you jump on one at 205lb and its gonna be noodlefest. I think the 160w reverse crew would be perfect with its waist width of 261mm its about as wide as your gonna get.