On further reflection, it apparently requires an RCC, not just any persona forming matrix device, so it's out as an option. But she can still create AROs with locations of devices she has spotted via Matrix Perception.
If their gear is running silent, she'll still need to get 2 MARKs and perform Trace Icon to get real-world locations for any gear. Currently only the two goons outside and the ponytail are running straight Wireless On.
I thought that I'd read somewhere that you could change all or any subset of your devices to silent running (or wireless on/off) with a single action rather than having to spend an action on each device, but I can't find that now. This means that it will take him a number of combat turns later to switch things to Running Silent once the element of surprise card is played. He's using the Roadmaster as cover and trying to draw fire from the guards to keep them off A&B, so it's good to be seen, and with his high Matrix defense and the Jammer, he should be reasonably safe from the decker. Once he leaves the van to help inside (if he chooses to do so), he'll probably have a few CTs of moving with not much else to do, so he can switch then.
You can spend one action to turn everything Wireless On, Wireless Off, or Running Silent. Or, you can spend one action per piece of gear. I also rule that you can likewise create "bundle" packages where every time you reboot things come back to prescribed settings. For example, if you never plan on having your Cyber Eyes running Wireless On, when you reboot they don't come on, but if you want to take advantage of Vision Enhancement II, you need to spend an action to turn it Wireless On, and another to turn it off when you're done.
ETA: it's listed in the section on Actions starting on 163. It's a Free Action if the device is controlled via DNI, or a Simple if not. The bit about multiple devices is on page 421 because why put all the rules in the same spot, especially when you claim on a different page that it's a different kind of action? While not explicitly stated, I think the same holds true for turning devices Silent. Does that make sense to everyone?
I am leaning toward the chuck & charge due to the lower number of hits required. And, as you mentioned, it helps keep the guards from adding to the opposition A&B have to face. Which reminds me - I thought that there was only one guard left outside after ponytail went in to get the briefcase. Are there still two outside?
When you came on the scene there were three guys standing outside, including one ork. The ork escorted Ms. Pachis inside, and has not rejoined the group. Ponytail stayed outside until he recently went inside and went into the Sunrise office. That leaves 2 goons outside, both human, both mundane, both cybered, though one was tagged as having more chrome than the other.
