I always kinda chuckle at the huge boards people talk about. Unless your riding cambered decks ,under 20 degree slopes all day and really need the surface area to float, it's not needed. I'm 6' or 6'1" and 280 right now. I Ride 162w/163w. I typically stick to steeper terrain in powder and have no issues moving right along and floating through it. I ride hybrid boards mainly too, this helps with float. I hate the longer boards in bumped or gladed terrain. I'm right at 70 days this season so Far so I'm not inexperienced nor am I a 280lb slug.
The only bigger board I'm upgrading to will be for my split board. "Wild" snow just rides way different than waist/chest deep snow with a resort type of base.....