Building this cabinet to be inside a walk in closet, the dementions will exactly match the back of the closet as to be somewhat hidden from the general public, here is my drawing...

The blue and orange lines signify airflow...
Ill be doing an ebb & flow for the clones off of the mothers, using a 600 watt HPS light, and in the upper chamber I will be doing the floro tubes as you can see.
The ducting will be running down the back connecting together, going through an activated charcoal filter, and then it will run directly behind an ionizing tower and being pushed through that. The inlets will have air filters placed over them.
Any thoughts suggestions concerns with the design or venilation?