Consider using 16oz to 1 litre containers, even plastic soda bottles with the top cut off and some drainage holes cut in them and just do as many as will fit with the containers packed in there as tight.
Veg them only long enough to have them grow thin single colas and not enough to let them branch out. Two weeks max veg to no veg at all, depending on the strain.
The yield can be incredible and the turn around time is fast as can be. I can point you to examples if you like.