there's probably nothing wrong with the bindings and board you already have (assuming you still have them and they're within your size range). I'm skeptical about the boots, because you really want those to be fitted in a shop.
I'm your exact same size and my board is a 155 cm twin (twins are just symetrical boards; front and back are exactly the same dimensions and there's no set-back in the binding inserts). 360 edges means the metal edges wraps entirely around the board (pretty sure only lib tech and gnu skimp on the edge material) and is considered better for the protection of the nose and tail.
I agree that, after experiencing oregon, you may be sorely disappointed in the amount of snow and terrain at your local mtn (ober). It'll might be o.k. for learning the basics and maybe some tricks.