So after a little research and several different trials I found that the easiest Leve to burn my allowances (having all DoH and DoL to the max that is) was the repeatable Armorsmith Leve at Coinach's that requires 3 Cobalt Ingots.

PROS:
1. Pretty small distance between levemete and hand in NPC.
2. It is repeatable (1 leve allowance=3 turn ins)
3. Cobalt ingots are really ez to mass produce (even HQ if you got the patience) and dont take too much inventory space.
4. The rewards cycle but apart from shards you can end up getting back stacks of cobalt ore as well.

CONS:
1. Well i can only think of how mind numbing it can be to run in cicrcles at coinach's (damn that tent blocking my way between the levemete and the turn in npc )

To sum up you expect to get:
1 leve allowance = 9 NQ Cobalt Ingots = ~1500gil +extras (~3k gil if HQ)

So if anyone has found any Leve that seems easier and/or more profitable than this, please share