Four queen sized beds, plus crew quarters is going to be a huge boat, if one even exists. A catamaran is a given. Even with monohulls that advertise that kind of room, the berths are always different sizes, some are even bunks.
Everyone is different, but I would find having 10 people aboard to be difficult. Competition for deck space, galley space, dinghy space, etc, regardless of having enough sleeping space.
Edit: I stand corrected. I think this will do it for you. It looks to have crew bunks in the forepeak. Still its going to be a lot of people on top of each other.