I have an Adventurer 3 Lite, which is almost the same printer. I've used Flashforge's own filament (0.5 kg spools) in several different colors with good success. I've also used Mika3D (link) with no problems. The Flashforge brand is more costly than most other brands I see on Amazon.

I purchased my printer relatively recently, so I would assume I have the V2 nozzle, but haven't pulled it to verify.