Dont you think that 32 inches is a bit low ?
You will have a pot that is maybe 8 inches tall. What sort of lighting are you using ? I'm guessing that the light will take up a minimum of 4 -5 inches if stuck to the roof of the box. That's 12 inches taken up there even before the plants germinate ! You must be using CFL or fluorescent T4s or something to keep some room.

You have 20 inches maximum to play with in the tent. I'm guessing that you will have to start your bloom when the plants are at 8 - 9 inches tall. The plants will double, at least double, in size after you begin bloom. You will have to do a lot of low stress training to keep these babies away from the light. You will be tying them down all over the place. Give some details on the lighting etc.

I would advice you to keep your light very close during the veg stage to keep the nodes fairly tight. Not more than 1 inch between nodes. Stretching will be your enemy in this grow. Keep the lights as close as possible without burning the plants. imp: