many thanks to you both!
I will propably check with a guz who use to maintaine my suspension, when he will be back from Spain.
However, as the R1 forks seems not to be maintained long time, I decided to do the standard maintenance (new seals, oil etc.) but I will not change the standard spring yet.I will see how it will fork. I will only need to find proper setting for them on Fazer.
Regarding the trackdays, I used to do trackdays often in the past even with Fazer, but no enough time now. Therefore, I will be happy if I will do one or two trackdays next year. This means that I can use softer spring, as you recommend 9.0 could be enough.