Zerg Build Order Revised

I've moved up a bit in my league with several consecutive Zerg wins starting off with the following build order:

10/10 Spawning Pool
9/10 Drone
10/10 Overlord
10/10 Overlord
... Spawning Pool Completes ...
10/10 Zerglings x6
... make drones ...
... attack with lings when they complete ...
... choose how to proceed from here, usually to either roaches or hydras ...