Glad to hear you're enjoying the new bike. Looks like a Great place to ride.
Obviously main jet is pretty easy to dial in. Then I would recommend a Suzuki needle such as a NECW. Then work on the pilot.
Mrquick got good results with the NECW on his 2019 EC300. See the thread here...
http://www.gasgasrider.org/forum/showthread.php?t=23994
All the best, Dave.