newbie -micro cabinet

have cabinets in my garage I want to use, is 28"W x 22"D x 32.25”H too small for a LED, Hydro cabinet?

I’m thinking of using: MarsHydro 300W LED Grow Light Full Spectrum and it is 4" high

And

Hydroponic Growing system DWC SELF-WATERING Bubbler Kit it is 7"High

Is 21" enough room for an auto flower plant?
 
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