i concur with a bit more time as well, a good 2 / 3 weeks looks about right to me as well..
regarding the amount of colas you grew, and the stretch, have you ever grown this strain before? also, it depends on what strain it is, the more sativa in it, the more stretch it'll have, the more indica, the less stretch ime.. i just grew bubba kush, and that thing had hardly any stretch once it hit flowering..
btw, looks great, nice job..