For anyone looking for a good farm spot: - Caelid Divine Tower, just outside the boss arena- Volcano Manor, just outside the Temple of Eiglaydroprate seems to be somewhat small, though.
This set can be found in the Divine Tower of Caelid: Basement. You can easily farm the one right after the grace point. Just a heads-up they do not drop the sword.
Is this not the Fire Monk set, the white one?