Thanks to those who responded to my original post.
So I did some experimenting with the levels before actually recording a show. I started out with the CA-9100 set at about half way, but found that even with the R-07 cranked way up (50-60), the signal seemed kind of weak and the resultant volume was too low. So for the show, I settled on starting out with the CA-9100 turned up to about 4/5 of the way to the max and set the R-07 level at 32. It was an outdoor show where I ran AT853s w/ foam screens inside a Kangol and was around 20-25 yards from the stage dead center. During the show, I checked levels with my iPhone, and noticed I was consistently pegging close to (and sometimes above) 3, so I started dialing the level down and ended up in the high teens in order to keep it pegging at around 12. The audio turned out really nice.