FFOF has nutes in it to carry a seedling to week 4 or 5 , autos will start to preflower around this time. I mist the plant lightly every few days and do a VERY LIGHT watering when needed.
This is my go to feeding schedule for NO BRAINER grows. No complicated nute regiments to follow.
1 week(seedling) – Ph adjusted water
2 week(start of vegetative) – Ph adjusted water
3 week(vegetative) – Ph adjusted water
4 week(pre-flowering) – 1/2 veg nutes
5 week(first flowers) – 1/4 bloom nutes
6 week(flowering) – 1/2 bloom nutes
7 week(flowering) – 1/2 bloom nutes
8 week(flowering) – Ph adjusted water
9 week(flowering & harvest) – Ph adjusted water till harvest
As far as your lights - position a bulb over seedling ( not too close ) 5000k CFL and run either 24/0 or 18/6 . The light is enough to stimulate growth , after you have a few nodes in growth - PICK a light schedule and DO NOT CHANGE IT.
It is IMPORTANT to stay on the light schedule you choose all the way til harvest.
AUTOS are locked into an internal ( shorter life ) clock to get from seed to end. Thats why they flower automatically ( and DOESNT NEED 12/12 to flower ). Just let her do her thing without pushing her. They are more prone to be overfed , less is more.
Good luck