Well, I picked up some heavy duty zip ties, and zip tied the light as close to the top of the tent as I felt was safe. This gave me a few more inches to play with.
Stretch seems to have stopped, finally. Only took almost four weeks. I don't see any new growth with Mag/potassium issues, but I am going to up Cal-mag another 1 ML per gallon just in case next feeding, and keep KoolBloom cut out.
Looking around the forums, it seems a number of people growing under LED have the same issue. I guess plants respond to the LED's differently, and need more cal-mag/less potassium.
Judging by the size of the buds, my guess is this is going to go a full 10 weeks. Very much a sativa. I will be starting up another strain in the next two weeks.
I debated about doing the Grape strains as recommended by Mark, but I think I will run them closer to spring. The reason being is before I want to mess around with regular seeds in a small tent space, I want to get a few harvests under my belt. As well as begin staggering everything. This will give me time to select the plants I like, and pre-flower some clones to check for female, then select the strongest of the female plants later in veg. All while having others going.
I will most likely be running Strawberry Sour Diesel by Devils harvest, or Mad Kush by Sannies next.
After that will be GrapeGod and Ghost Train Haze #1 (or #9 if I can get it).