We don't have a Beneteau, but our boats are pretty much the same size. Our C34s have been "accused" of having little galley storage space. What many of us have done is to convert a hanging locker at the nav station across from the galley into shelving, some with plywood shelves, others of us with more open metal shelving. It really significantly even triples the amount of storage. We don't need hanging lockers, since we have a midships head, and hang jackets up inside the cabin doors on door hooks. I also put shelving in the hanging locker in our V berth.
I stuck a plastic trash can that takes medium sized garbage bags under our nav station and keep it in with bungee cords. Works great. Some folks don't like open trash cans, but I hate having to use two hands to put something in the trash, so it's just so easy for me to flip something into it without having to lift a cover or open a door.
Good luck. Your boat, your choice.