Units 48 and 49 are going to give you a much better shot at taking decent both decent bucks and bull, plus they offer great backcountry opportunities. During the archery season, hunters are usually focused on the elk leaving the high country bucks unpressured. If you focus most of your attention on high country mule deer, you will find that there is little competition if any at all. Like Cameron Hanes talks about in Backcountry Bowhunting, you will see no one and when you do, you can't help but tip your hat off to them for hunting that far and high. I'm sure many have experienced this phenomenon and love having the country to themselves. However, I will warn you that some of these less pressured areas are steep and rugged. I recommend preparing as much as you can, it could become a very physical hunt.
As for 52A, focus your attention near the alfalfa or corn fields. Water sources also play a small factor. There is some rugged country out there and the elk and deer do take advantage of it. Don't expect to find too many big bucks out here. There are the occasional bachelor group of bucks with a few real nice ones. Elk on the other hand are more promising. If you find elk herds, you should find at least one 300" bull. I have seen a number of 330"+ bulls over the years. The biggest bull tends to stay at the backside of the herds, while the next biggest is usually within a mile or so of the herd. The second largest bull is either a loner or with a cow or two. If you draw the rifle hunt, you could easily come out with a 330"+ bull. Weather plays a major factor, while other hunters hunt like renegades. Patience, time, knowledge of migration routes, and effective vantage points are your key to success when hunting the late season bulls here.
Hope that information helps with your options. I'm most familiar with 52A, since I grew up hunting elk out there with my family. 48 and 49 has come from my own desires to pursue mule deer with a bow. My goal is to take down a mature buck first and then a bull this September with a bow in the backcountry, even though I'm confident I could harvest a 300"+ bull in 52A with my bow. Hopefully scouting pays off at the end of the month and have pictures to backup the information I'm giving you.