hahahaha I love it! I think you are right those are the most important words, maybe 'genau' and 'oida' are ones I would add to the list!
Genau :-) Oh, and be patient with us Germans/Austrians speaking English. We are trying really hard, but it doesn't come easy to us... https://www.youtube.com/watch?v=yR0lWICH3rY