You can get bayld and spend them on equipment in the Peacekeeper's Coalition in Eastern Adoulin as well. You can get that from Reives throughout adoulin areas outside, or Skirmishes.
After you get full item level gear (sparks, bayld, etc) you can work on upgrading your artifact/relic armor, start heading into skirmish for armor (Yorcia Weald skirmish), etc. You can also do Wildskeeper Reives.
You can do SKCNMs for chapters to upgrade your artifact/relic armor, progress to Outer Ra'kaznar skirmish to upgrade your armor, start running some
High Tier Battlefields, and eventually, when ready, head into Delve. That could be at any time, it just depends on your job, gear, and skill level.
Oboro is useful as well for a JSE weapon.
If you ever have quick questions, you can ask me in-game (Crevox, I'm on your server).