185 pounds...I'd say 157-160ish for a board. I know Anthems a bit stiff, but if you really want it I'm sure you can grow to learn how to ride it well...I'd probably say something a little softer.What type of riding do you plan on doing?
And 390s are a good choice. I like Missions as well.
Bindings: Burton Missions 07
Boots: Burton Freestyle 07