This was the longest I've ever done, 2 solid months this time. You're probably right, I had the same feeling, I always did only a month but I'm a lot happier with this 2 month. Even though I had some slow growth, she still caught up very well. She's stretching a lot that's for sure, but it's perfect for what I wanted, I wasn't happy with only having like 4-8" above the net, I wanted to get a good foot over the net so I could go for cola's like I had on original amnesia.
Yeah the stretch game takes some learning and of course it really comes down to genetics. Growing strains you've done before are your best bet, then you can really fine tune to your exact needs. Nice, I'm only working with 7' in my tent and my cool hood is HUGE so I gotta be careful with my height. I managed to plan this grow perfectly for height and width, all the stars just aligned on this one!