Wow! And when we first get our ideas they sound so simple. Then we begin setting up for our grow, only to realize there is much more we need to learn, purchase or research. We are growing our first grow in our closet. It's a typical 2.5' x 7' closet with sliding doors. We are growing 3 girls right now. It's enough right now cleaning everyday, first I vacuum then I follow up by wiping down the entire grow room with a bleach water solution. I'd love to have what is needed to be able to handle 50 plants in 5 gallon buckets, except I personally would be a nervous wreck that just one plant would get mites or mildew and wipe out my crop. Just daily maintenance would be overwhelming. You may be able to pull it off and the only way you will know is to try. Do you have the option of using the entire 120 sq ft if you need to? Best of luck to you.