1. Yes, the blizzlike server is exactly like one of blizzard's servers.
2. I haven't downloaded this, but saying 4 Command prompts makes me think they're MySQL, Apache, Logonserver and Worldserver. You need to have at least the MySQL, Logon and World servers running.
3. You just need MySQL, Logon and World servers running (Auth and world for Trinity iirc.)
4. just press Ctrl+C on the Logon and Auth, you can close the MySQL by x'ing it. Should try closing World, then Auth, then MySQL to prevent anything breaking.
5. You can if you're on an admin account I assume. when the world server has finished loading, type "acc create admin admin" or whatever you want for username and password, then type "acc set gmlevel admin 3 -1". Log in with that account and type .commands to see all the commands.