80 views and no reply's? Wow, this seems like a fairly common occurrence with me. Why?
Maybe it's a fairly common question?
That isn't too wide for you, I'm riding a board with a 246 mm waist width and 7.5 US mens boots. Wouldn't want to go too much more narrow than that. The wider board should float in powder better, but will take a little more muscle during fast transitions. All depends on what you want to do with the board I guess.