here's a couple of pics of cab's i've built; first is a wardrobe from ikea ($200, i needed something that looked like nice furniture) the others are a stanley tool cabinet from home depot. hope these give you some ideas. i would go with dwc(deep water culture). i think its easiest in small cab's. just get a rubbermaid storage tub, able to hold 5 gallons at least. paint the outside black so light can't penetrate and grow algae in the nutrient reservoir. use ahole saw to make holes in th lid for your net pots. inside put airstones enough to oxygenate the nutrient solution. you almost can't have too much oxygen.(more bubbles = less root problems). make your light hanging system adjustable, so you can maintain the correct distance from plant tops. the most expensive things you'll be buying are your tds meter,lights, and vent fans. don't skimp on any of these. when planning your set-up, think about safety( electrical things off the floor away from possible spills), ease of maintenance, functionality. keep reading posts here, every thing you want to know is available. good luck, let us know how its going.:thumbsup: