socaljoe
You should be fine
if you read my thread w/ pics; I vegged on 24/0 [half sun/half t5] for a full week (for better root establishment) before I throw em outdside, I'm in socal ATM as well, we are clocking about 13.5hrs daylight this month
I recommend 24/0 if anything, till they're at their 5/6th node (at least!) if you want a good hearty girl with lots of bud sites
so when day light switches to 12/12 outdoors here (end of August) it'll throw your pLants right into flower, harden off to 12/12 if you prefer, we've got a hellova long season anyway your plants will be fine up until late December