What we do:
- When taxi clearance obtained: nose sw on TAXI, rwy turn off ON
- Strobe ON to cross or enter a rwy
- Nose sw on Takeoff T.O. when cleared for line up and Landing Lights ON, but technically we do put the Landing Lights on as soon as we are clear to lineup and wait for the actual takeoff clearance to put the nose sw to TO.
After Takeoff, when flaps retracted and spoilers disarmed: Nose SW, Rw Turn off OFF and we keep the landing lights till FL100 even though airbus SOPs doesn't require you to.
Now we are expecting some changes soon for fuel burn reduction: retraction of landing lights as soon as flaps are retracted and extension when setting flaps 1 during approach.