Be sure to have a good map of land ownership and to understand a bit of the tresspass laws in UT. A lot of the intermingled private in that area is not fenced off from the public and IIRC is open to be hunted unless cultivated or posted. A whole bunch is neither. Do you have a plan of where you will be staying? I would center my focus on Rich County with the town of Randolph being the center. You'll find pronghorns in about every direction from town, but east is mostly hayfields and private. I've seen more animals in the other directions, especially south/southwest. For does, don't be afraid to knock on doors and ask for permission if you see them using a specific field consistently. Lots of the folks there aren't that fond of pronghorns (they've really only been there since 1983).
Once you get a bit of a plan down, let me know if you want. I spent quite a bit of time in that country and can recommend some places to check out.
PS- Might want to take your dog. Some decent blue grouse hunting in the mountains between Randolph and Ogden.