I agree with the others about leaving the leves behind. You will need those allowances to power level your gatherers and crafters. Even if you don't have any intentions of leveling DoL/DoH bear in mind many omni crafters didn't intend on being so either at first. Only if your allowances are maxed would I do battlecraft leves.

On a side note, something to consider about battlecraft leves is the coffers can sometimes give aetherial versions of gear. Very, very useful.