Well, it looks like the stretchy-ness may be there...but mine have more sativa leaf look. She is hard to control when flowering. If it is, you may have a fun time flowering at that size :) But maybe the indica in yours will keep it controllable. Have you ever run it before?
I think the only way i have been successful at controlling her was flowering at 6" clone. Other than that she will do what she wants and says F. U. while doing it. Even at six inch clone i still ended up with 3.5-4.0'. I usually just throw em in around the edges, she seems to like that better than direct light. She will finish around 60 at edges and sometimes take 70-75 in the middle of light square, its strange. Its like the tops dont want to finish under direct light and she seems more sensitive to it and will bleach out, more so than anything else i have in the same position. She cant seem to support her own weight either even with silica and such, she needs a screen.
I'll post some pics of some trunks up once i get to them later this week\weekend. There all a knotted up mess from training, some are ridiculously huge. She seems to love supercropping but not topping.
Its a cropper for sure of pretty damn good smoke. Much, much better than a normal one like matuska or something similar. More sativa high and potent. Not the "end all be all", but still really nice smoke.