Example of Hacker in Action by a SR4 newbie, Am I doing it right? Options

[fazzamar]

Here is an example of how I understand hacking to work as a GM that is going to be running his first game of 4th edition in a week or two. I'll use Frank the Hacker in my exampl

Frank the Hacker

--Attributes--
B-4
A-3
R-5
S-3
C-3
I-5
L-4
W-3
E-4

Initiative (Matrix) 10 (11)
Initiative Passes (Matrix) 1 (3)

--Active Skills--
Cybercombat: 4
Electronics Skill Group: 4
Electronic Warfare: 5
Hacking: 5
Perception: 3
Pistol: 2

--Qualities--
Codeslinger (Hack on the Fly)

--Augmentations--
Implanted Commlink (Sony Emperor w/ Sim Module modifed
for BTL/Hot Sim, w/Response 5, Signal 5, System 5, Firewall 5);
Control Rig; Datajack; Data Lock (Encryption 5)

--Matrix Gear--
Subvocal Microphone; Programs [Analyze 5, Armor 4, Attack 5,
Biofeedback Filter 4, Black Hammer 4, Browse 5, Command 5,
Data Bomb 2, Decrypt 3, Edit 5, Exploit 5, Scan 5, Spoof 4,
Stealth 5, Track 4

Example 1 - Using the food fight 4.0 premise, Frank and his crew are at a stuffer shack at 0400 when an assassination crew attacks the store.
A gun fight between the runners and the assassination squad ensues.

The Stuffer Shack's node's stats are:
Firewall 2, Response 2, Signal 3, System 2
ARC: Terminate Connection

Frank currently has Exploit, Stealth, Biofeedback filter, and Scan loaded.
Frank knows that all of his crew have low-light vision so he decides he's going to cut the lights.
Since he's using AR instead of VR he uses his meatbody Init of 10 and only gets 1 pass a turn.
When his action phase comes up he tries to hack on the fly into the Stuffer Shack's node.
Hacking + Exploit (Firewall, Complex Action) Extended test, so 10 (2, Complex Action), resulting in 1 - 2 - 4 - 6 - 6 - 2 - 5 - 6 - 6 - 3: 4 hits, plenty to get an user account and log Frank onto the node.
The node does its Analyze + Firewall (hacker's Stealth) Extended test, so 2 (5) Extended test and gets 6 - 1: 1 hit, which the GM records in-case of future rolls towards an alert.
Once in he uses his free action to Change Linked Device Mode (SR4A pg. 228) to turn off the lights.
(Is that how it's done, or does he have to hack into the lights' node, which I would assume is hardwired to the main node and not wireless, and then use "Change Linked Device Mode", or would it be "Issue Command"?)

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I'll continue to update this example to make sure I understand the rules steadily.
Thanks so much for anyone's help/comments.