I can see that were sorth of simmilar as Im 5'11" and 222 Lbs and wear size 12 boots... I come from a surf and Skate background so I usually ride looking for tings to hit, like to seek out fresh snow and draw my own lines as much as possible, fortunetly or not I've always ridden Burton Boards, so I can only give you feed back on them... I use to ride a 158 Wide Burton Joystick; Rockered board, and replaced it with a 150 Burton Nug, I love the down size of it, it's a board I have tons of fun with and have been in big mountain conditions with waist high fresh snow and loved it.
Im thinking of experimenting with a 146 this season... will give my feedback when I do, but for now, thats what I recommend.
If your in to riding super fast, it might not be the best board for you, but if you like to hit jumps and tricks, its the way to go.
also if you go Burton, I find boots and bindings are very compatible with each other and not really like other make boots, they just dont stay on the bindings as well, also one of the benifits of Burton is their channel binding set up, I personally love it.
Hope the infor helped some,