FACC zones? I can recommend two classic places: Outlaw Camp and Dark Cathedral. Of course, DC further deep floors are recommend only after you are past that level range, but these two places mentioned are easy to hunt, easy to hide lootbag, easy access mailbox (no need to have completed the Postman's Quest), reasonable profit with a somewhat good experience for Free Accounts. Kind of forgotten nowadays, but really good to hunt around.
Oh, and don't worry about the Giant Spiders from Plains of Havoc. They cannot be lured further from the plain anymore, you will be fine on the Outlaw Camp. If you want to go to Dark Cathedral, always travel by the Outlaw Camp, you don't need to travel across Plains of Havoc, just walk by the western most border after you already crossed Outlaw Camp, keep always close to the ocean. You will be safe and you see very easily the entrance to the Dark Cathedral dungeon.
The bad part is that Player Killing activity can be fatal if it happens to you there, but I can attest you that this place is way more safer on Open-PvP servers when compared to Mount Sternum Undeads or Dwarven Mines (personal experience).
Now talking about other places on FACC main, we can still say that there are great places to get money on earlier levels:
- Mintwallin (remember to activate your Mino's Task on it before engaging on intense hunts there. You will need Postman in order to maximize your profit)
- Mount Sternum Undeads
- Dwarven Mines (again, Postman's quest really helps there)
- Shadowthorn (excellent place for profit, Postman also recommended)
- Venore's Corym (very busy area, but with an excellent profit)
- Outside of Orc Fortress (At your level range). Start early on with the Rorcs, and try to eventually circle around the Fortress. Be careful when engaging with stronger Orcs. You can try go inside if you are close to level 60, but it will reduce your profit and can be quite dangerous, unless you got excellent skills and gear to help you. There is a Royal Mailbox inside of the Fortress, so Postman is once again better in order to send your lootbag to your personal depot.