OP, I watched some of your guide and it seems pretty good.
I do have on tip/criticism though: after you have level 3 security clearance, and have turned off the alarms, why turn off authorization scans? Those only affect the doors and if you leave it on, you can go anywhere (level 3 clearance) and potentially hostile NPCs can't always follow you. Unless you need to discard your security profile, I recommend never disabling authorization scans as disabling it has no benefit and leaving it enabled can offer you protection.