Hehe welcome to the wonderful world of growing cannabis ! Trying to judge what the stretch is going to do is one of the more difficult things to judge as different strains stretch more so than others and at different times than others. I've done the same thing and have it going on once again where I've busted out of my tents, ran out of room for the lights and now have them tacked to the ceiling beams and now I have nowhere else to go. Once they're flowering you dont want to crop the tops anymore because thats where your best bud is likely to be, that is, if you dont burn the shit out of them because they're too close to the lights.
I know this much, never again will I grow using any other method but LST. I thought just this once I would try growing straight up and cropping once in awhile to see if I could get my yields up and thats not the case. Despite using every inch of height in my growroom, this run will have the worst yields I've had yet.
So, by trying something to increase the yield, I've actually gone the other way and reduced it.
Fuck
But hey, its not a total loss either and whats there is just drippin in crystal so its all good. Its always a continuing learning experience. The next run will be better....(if I dont burn the fuckin house down that is)