360 gear will get you to Shadowbringers since that's all that is required for Ghymlit Dark. You can get Ryumaku gear which is 360 for tomestones of mendacity, which are common endgame dungeon rewards and beastquests and hunts. scavean gear which is 390 is purchasable for tomestones of genesis....not as easy to get and weekly caps apply. But it depends on what you want to do. But 380 isn't required at all to get to Shadowbringers.