Really,
4 zips green or purple? cause once the plant turned purple (sugar,fan, and bud structure) it immediately shown sex and then flowered at all of maybe 6-8 calaxes very wide spread. I have a pic of this bag seed that grew over the top of it which was primal to watch. That DarkDevil seed it never lacked for anything. (For me) I run RO water using House and Garden Aqua Flake A+B PH-ed to 5.8 with Rapid Start, 2 drops of Superthrive, with 1/2 a tsp of silicate (works great as a foliar during all stages).
I am no expert but i use a 5.8 ph with 1 drop per gallon superthrive paper towel method. they typically crack and within 48 hrs drop a large taproot. If its an AF it is in its home and breaks soil the next day or 2. Me with a 600 watt hps how did she/you run that 4 oz plant ? that would be an amazing plant. I could see it as a green pheno getting that big.