Need help figuring out ventilation and odor control for cabinet

I'm hoping some people with any kind of experience building grow cabinets can give me a little bit of advice for the cabinet I'm think about building for myself.

The cabinet will be 78"H x 48"W x 24"D in dimension and will be a single flowering chamber. That works out to be 52 cubic feet.

I'm not sure what size or types of fans I should use for the intake and exhaust fans. Also should I have more then one intake and exhaust fans for a cabinet this size?

What size of carbon filter would I need to keep odors in check?

I plan on using air cooled reflectors with either two 400 or 250 HPS or one lamp.

Any help, suggestions and advice would very much be appreciated.
 
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