Pot Sizes For Auto's

High all,

I got some diesel ryder and auto blueberry seeds, I made a closet 12x30inch and 24inch height (it can be higher if needed).
I want to put as many pots as possible so I'm thinking on putting 21 pots of pvc pipes, 4 inch wide and 15 long.
Do you guys think those pot sizes are enough??

?????????????????21 pots 4" wide 15"long in a 30"x12"space,maybe 10 plants in there thats 2 every 5,6",id build a bow 12x30 and put plants close to edge of box roots will grow inward more grow space or 3 four inch pots by 8,9 four inch pots 24 to 27 plants,use lots of air dude lots of air,good luck ,dont know if i helped 4inch will work,u see dudes using

U see dudes using beer pong cups and having 4 footers in em though so you could do 50-60 beer cups

i use 6 gallon pots if you stunt root growth your yield will suffer and with autoflowering strains the yields aint that great anyway let them be all they can be !!!!!!!!

I use 2 gallon pots and get almost 1oz from each plant.

I'm planning on putting 21 pots so i can get approx. 10 females after differentiation, they are pretty small when they show sex so size doesn't matter pretty much.
Thanks for the quick reply

most redings that mention size say 2 to 2 1/2 gal pot for autos

but now easy ryders and others can reach close to 4 feeet so not sure

to small can hurt you to big can not

i keep diesel ryder autos goig all the time got 3 right now i use 2 1/2 gal pots sometimes pot gets full never root bound

I'm planning on doing something like this guy here http://www.icmag.com/ic/showthread.php?t=131278
but with more plants.