We are refering to a specific Class 40. Custom build, Owen Clarke design
https://www.class40.com/en/bateaux/53-dragon.htm
Just checked Facebook, boat has been sold
Early design before the class went low freeboards, so better suited for what you want. Most early C 40 designs should suit you, the...
You really need to sail on a 40 first. Being longer, it will be a bit faster. But all those boats are wide & flat hull shapes & will suffer (lots of wetted surface) in light air. You might want to look at "Dragon" a first gen hull that's in top nick, and a bit skinnier in general