Misc rules questions 1, drones, EW, hacking Options

[Riley37]

My PC has a Response 3 commlink and a Pilot 3 minidrone.
If I want to use the commlink for EW, I could buy a Rating 3 Agent for $3000, the EW autosoft at rating 3 ($600), Sniffer 3 ($1500), Decrypt 3 ($1500).
If I want to use the drone for EW, I buy the EW autosoft at rating 3 ($600), and Decrypt 3 ($1500); I don't need Agent because the drone has built-in Pilot; and for $150, I can install a Radio Scanner lvl 6, which acts as Sniffer 6.

Looks like the drone is the far, far better option, not requiring an Agent or a Sniffer program. Am I missing something? Does installing a radio scanner really fulfill all the abilities of the Sniffer program?

On BBB p. 227, under the description of the Spoof program, the only listed use is the "Redirect" action. However, the section on the Spoof Command, p. 224, says that the Spoof program is used with the Spoof Command action. Which is correct?

If the Agent on my commlink or the Pilot on my drone wants to send commands to someone else's drone, it needs to roll Hacking skill plus Spoof program. I don't see an autosoft that replicates the Hacking skill. -1 for defaulting, plus the Spoof program rating?