Phil,
I can't offer any tips to specific areas since I don't know that unit too well. However, it's good Coues country most anywhere in that unit. As with most units, your chances of seeing good bucks increase the further away you get from the road.
Not sure if you've hunted Coues before, but high mag' ( >10x), large objective, tripod mounted binos are a big help. Alot of Coues addicts (me included) hunt by the seat of their pants - sitting & glassing for hours at a time rather than hiking every hill, mountain and canyon.
You'll likely see at least a few illegals, but the UDAs usually aren't a problem. Most try to avoid contact with los americanos. Just keep your valuables locked up and out of sight. The drug runners, however, can be a whole other story....
Good luck and happy huntin!
Rich