Anytime sportster. Lopes certainly bring hunting challenges that most people never think of. On one hand, they look easy to take 'cause they're standing right next to the highway. Until you stop the truck and get out!
I've guided many antelope hunts and I got to tell you, the best advice I can give is to set up your rifle to zero at 200and practice shots up to 400. Milk jugs, metal plates, or as I like, balloons on a board are great targets. And anytime you shoot those ranges, you need to have good optics like an 800 yard range finder or better. Believe it or not, a lopes vitalsat 387 yards through the 9 power on your scope can still be covered up by the reticle.

Keep in mind the Type 6 licenses. (if there are any)These are leftover tags for doe/fawn antelope. I believe you can get two. That would be three lopes all together. The G&F issued 500 type 6 for area 26 and 300 for area 28 so there should be some left. They are sold at local sporting goods stores, propbably in Douglas.

Enjoy the hunt. Don't shoot the first one you see. And take care of the meat. And let us know how it goes.