i have my seedlings under 600w minimum from sprouting. I still use cfls in some cases where i havent upgraded. I used to use cfls for few weeks then veg under 600w hps or mh. Now i start right there. I can get a seed to flower in less than 4 weeks in 6.5 litre pot with 50/50 coco/perlite and still yield no less than 2 quality oz per plant but anything up to 4.25oz per plant. True veg is when real leaves show definately, but as soon as first leaves show after cotyldons i feed. I dont feed much. I dont saturate the media. I go straight to 6.5litre pot. I will start by feeding 50%nute and use a syringe giving 50ml per feed daily week 1. i then up it to 100% and 150ml week 2 then 300ml 100% week3 and 4. 300ml per day all the way through flower. either feed,feed, water or feed,feed,feed,feed,feed, water. The first is the same measurements whether its feed or water. and the latter i add double the amount of water.
Follow that from seed in coco or hydro and u wont go wrong. Cant say about soil as its been a long time since ive grown in soil and i wasnt as experienced back then.