Hey man been following your grow for a while just haven't posted but it looks great! I'm on my first grow too about 15 days behind you in flower but I noticed you were looking for a strain with one main cola. I recently acquired some seeds from a friend called Chronic from Serious Seeds. After a bit of research I found they are considered the 'commercial' strain but they have a good yield and grow one main cola. So I'm not sure about the quality but hey free seeds are free seeds. Anyway good luck