First of all welcome to the forum! stick around and learn as much as you can as theres a lot of information here. I go to Wyoming every year for antelope but so far have not checked those units out. I have hunted many different ones by going over the data for draw odds and public land or HMA areas available. Hopefully someone with real information will jump in but that't all I have.
Good luck with your hunt if you make it up there. You will love hunting antelope if you haven't done it before already.
Welcome to the site. Alomst anywhere in Wyoming can be good for antelope. We have been going there for about 6 years now and we always do very well. I do not know much about 18 or 19, but I have a nice book at home that might have some info....I will check later tonight and let you know. If not I can give you some insight to some of the areas around where we hunt.
I have always looked for ways to save money and gain skills. I have the firearms basics covered so I rarely buy firearms these days. But I do watch for bargains. Sometimes a little TLC with simple tools will let you bring an old gun back to life without investing a lot of money. One such find was a side by side 12 gauge marked “W. Richards” It is not from the fine English gun maker Wesley Richards, it is a cheap knock off copy probably made in Belgium about a hundred years ago...