i also start seeds in fox farm light warrior. once they get some good roots, i transplant them into 1gal bags of the soil. after about 20-30 days of veg i transplant to the 3 gal bags for flower.
yes now i start seeds in 1/2 gallon pots and veg for 28 days then into 3 gallon bags and right into flower.
i was at 1500ppm and 77 degrees. i since dropped to 1000ppm to see if there is a difference. so far so good.