Plant Cycle Times

I've read alot about having a consistent system of cloning, veg, and flower. I could be cloning while others are in veg/flower, etc. Here's my question. Flowering, in many cases takes more than twice as long as vegetation. If I start 10 plants in flowering today (78 day in flowering) and I have 10 plants in veg (40 days in veg) then that means on day 40 of flowering I'm doubling up in that space. How the heck does this work when there is only so much space? Eventually the flowering area will overflow. I hope this makes sense.

first theres no set time 78 days is a lil long , maybe some sativas may go that long, but if u stick to indacas there flowering cycle is usualy shorter, so look at the seeds flowering time when u get them, and thats not always a exact day it will be done , alot has to do with conditions, second if you want to have a continues garden going, you will have to either use differnt rooms to seperate the veg & clone room, from the flowering room, now if your tight on space , seperate the veg room from your flower room with a shower curten or sheet rock, any thing that will keep the light out of the flowering side of the room, you should veg for 24 hours, doent need any dark in veg, and flower 12/ 12 wiht no interuptions, keep your moms with the clones and seedlings