Dont skip Encounter at Nabai
no, it not an easy mission, and the rewards, well.....
could be better....
what you want to do is use it to test who is ready for the Darmos drone hunt, (and the bralkir warship hunt)
if one of your members cant finish the exodrone hunt, theire isnt mutch point in letting him hunt for Darmos drones
I can usealy get it done with 3000 to 4000 kills for the 30 drones = 3 to 6 hours, depending on how many other things are going on at the time (npc shares, base attacks, etc)
split it up over 3 days, and you can even do 8 * 3 = 24 of the 30 kills with the Raix weapon, making it an easy hunt, but I only do that if we have enougth kills to open task 2 + 3