Buying a new snowboard! Need Help!?

Yea i'd definitely go with your second choice of bindings, Forum is much better than 5150. As for compatibility I think you'll be fine, that's not one of burtons channel boards (or whatever they call it). Im pretty sure the baseplates on forum boards work with burtons hole pattern, if not just send Forum an email and they'll probably send you a different baseplate for little or no charge. All the hardwear that attaches to the board will come with the bindings, you won't have to buy screws or anything