I don't know about action, because I'm not familiar with the kingman, but regarding sound volume and scale length, I can recommend Tacoma's Thunderchief.
If you drop the long scale requirement, you could go for the Warwick Alien, which is probably the most comfortable ABG I ever played (it has the neck of a Corvette, only shorter, and not quite as big a body as the Thunderchief). It sounds superb, but a little quieter than the Thunderchief.
I own both and don't plan on getting rid of any of them in the near future
