JT runs a quality business. I hunted some of the ranches he guides on as a young man- you won't see a shortage of antelope. The only negative is you would have to apply special for a guaranteed draw. https://www.bar-nunn.com/
Here is another guy guiding in SE Wyoming. https://www.tylersims.com/
I don't know him personally but have heard good things about his antelope hunts. Keep in mind, it's really hard to screw up an antelope hunt so most outfitters will offer a solid hunt.