If you give us your location/altitude/temperature then
Jakobi might be kind enough to suggest a starting point for jetting, to give you a head start.
The standard no.7 slide is usually OK, so it"s a matter of trying different needles, main jets, pilot jets and clip positions. Most important to just make one change at a time, then test and keep notes so you don't get lost.
Make sure you're using a good quality full synthetic oil mixed at 50:1 (usually 50:1 but please check).
If you speak to your dealer (where you've just spent thousands) I would hope they'd help you out with supplying jets/needles at a discounted price! I wish GasGas and other manufacturers supplied a selection of jets/needles with their bikes.
Congratulations on your new bike, it looks stunning, I'm very jealous!
