I think what people are getting at Craig, is the why and how you want to fly a B200. It makes a difference....
On the offchance that you can write a large cheque and want to fly your own KingAir; I'd tell you to keep it on the N reg and fly it on an ordinary FAA ME licence - no ratings under 12,500lbs.
If you want to be paid for it then it depends on where you will be doing it, and for whom.