Sounds like a good "first stand" spot, right at first light. Much of the land I hunt doesn't have any vegetation taller than a soap weed. Lots of soap weed is good, good coyote habitat. But all you need is enough to sit next to with good camo to blend in. Get in your spot before shooting light, get the wind in your favor, and a dieing rabbit should work. I killed a lot of coyotes over the years with nothing more than a mouth call or two. I've come to believe that I can't compete with good electronics, especially when it comes to vocals, which is something I'm learning more about and how to use them. BUT, electronics is not necessary to have success.
My longest shot this morning was 150 yards. Rarely do I shoot at a coyote over 300 yards. I shoot a .17/204 so I don't have a long range killer, but rarely do I feel like I need more.