that sounds about right. Friend just hacked some of Ace's Golden Tiger, they were 4 weeks in and showed the beginings of pistil formation. He knew what you are stating but they were also huge plants. They are kind of uncontrollable. If you grow these please enlighten us all with a grow report. I too will be growing the Golden Tigers, Malawi x Meao Thai, but waiting until I have a bunch of space.
Good luck, 12/12 will most likely be your best bet. It will prob be about 5+ months before your done.
Peace