Great guide! One thing worth mentioning is AVIRecorder. You can use AVIRecorder to avoid the pain of VirtualDub and it records audio as well. Plus if you don't want to deal with lawena's bullshit all the time you can use it exclusively, though you'll miss out on some things like the HUD (just copy this from lawena's folder tbh) and easy skybox replacement.
Another thing that people always ask me about is lawena seeing CastingEssentials as a HUD. If you want to use CE to get damage numbers + white killfeed in STV you'll need to remove the "resource" folder from it to avoid lawena seeing it as your HUD.
If you want there's other stuff like making sure cl_autoreload 1 is in your config to avoid that jittery reload animation, using snd_soundmixer Default_Mix to fix the sound problem on gullywash etc. but that's probably not in the scope of this guide.