Definitely the Sm/Md size. That way you won't have a huge binding where your boot will slip around, with an added bonus of being a bit lighter.
17 Korua Apollo . 17 Nitro Treehugger . 17 Lib x Lost Mayhem Short Fat . 17 Jones Storm Chaser . 17 Ride Warpig . 16 Never Summer Swift
17 Burton Malavita Wing . 16 Burton Genesis X
16 Flow Talon