600w sea of green?

i have a 600w available now that another of my grows has finished, so i'm thinking of doing an 81 plant Sea of Green using those red party cups and coco using clones. i plan to veg them for 3 days just to give the roots a chance to get a hold, then throw them all into flower for 8 weeks. has anyone here tried this old method? currently i yield around 50grams per plant with each cola weighing about 8g. will the lone cola of each clone be this weight or heavier since there's only one? really wanting to try this method as my grows currently take 11-12 weeks of growing, compared to 8ish for this way.