I've got a 157... and have been carrying...
I've got a 157... and have been carrying my boots and extra gear in a separate bag. Is the 166 a good sized bag for the 157 and my stuff (boots/bindings/goggles/etc.). And with the board only being a 157, do I need to worry about stuff shifting around a lot? Has anyone ever had a problem with gear moving around and messing up a board? I won't be using the bag for anything other than ground travel, so I'm not worried about the lack of padding.
The space sack is just a bag, so your stuff will probably shift around a bit. You want to carry booze? That is a recipe for disaster, you board could easily bust you booze open. The 166 is the best size for you for sure.
You can probably stuff your separate bag into the spack sack.
I can do it and I ride a 156 board. 1 boot behind the bindings, 1 boot between bindings, small backpack(helmet, gloves, tools, etc.) front of bindings.