That's a tough one that many growers find the most challenging -- maximizing the amount of grow space you have without crowding it and getting shitty yields. My last grow was pure Sativa and they stretched like crazy throughout the entire 12 week flowering process; they got so huge and had so many bud sites that I could not train well enough to get the most out of my space and lights, and I paid for it dearly. The main colas turned out nice, but anything below the upper canopy was larfy popcorn. Even though I came out with some fairly potent buds, all that hard work and long-ass flowering time didn't seem worth the harvest. My advice to you would be to start some bondage of some sort. If you're still going to be vegging for a while, I'd even suggest some pruning, such as a few toppings or FIM. Otherwise, you may just have to bend and tie to alleviate the overgrowth. Hope this helps bro,my plant seem to be getting bigger and bigger im hoping ill have enough size in the grow box any suggestions to maximize space?