Rooting Note 3 need confirmation

Okay so I'm fairly new to the forums but I'm somewhat knowledgeable when it comes to rooting and flashing custom Roms.. At least one the Galaxy S3. So I now have a note 3 and I'd like to root and install a custom recovery and then from there a custom Rom after a little more research.. Because.. Eff touch Wiz. Now I got the note from a friend and it's been fully updated knox hasn't been enabled but has been fully updated and I believe the same thing for the security policies. Now this is where my question comes in I found a method on google (galaxynote3root.com) to root and install the recovery I just wanna know if anyone can confirm this method is safe with the new updates and what not? I'd rather not brick the phone obviously lol anyways the phone model is sm-n9008w unlocked but was a Rogers phone.. Android 5.0 stock firmware and recovery knox 2.3 any help would be appreciated