Sounds like you got a sick deal.
For the bindings I'd use the el hefe over the ex on it. The el hefe will be stiffer, more responsive, have better adjustability, better build, more tech, and comes with the wedgie 2.5 and 4.0 (if he gave you both). Better suited for poweder all mountain riding. The ex is a softer, cheaper model binding and only has the 1.5 wedgie. Not that the ex is a bad binding just the el hefe will fit it better and is a better binding.