Have found that it's easier to get an awesome cup of coffee with more (weight) courser coffee rather then less (weight) fine coffee for the same given brew time. IE:
34g ground at "5" with a total brew time of 3 minutes
28g ground at "6" with a total brew time of 3 minutes
So, keep that in mind as you experiment. It's pretty easy to over extract the coffee and make it taste bitter.
Also, that kettle cools down very slowly with the lid on. I take it off, rinse the filter, grind my coffee, put it in. Then, by then it's usually about 200 and I put the lid back on.