Hi everyone on the forum. Thanks everyone for the great information, experiences and insights.

I have a room that is 11' wide by 5.5' deep and 7 ft tall.

I was thinking that i may be able to fit 10-20 plants in there using stadium placement. 1 row on the floor and 1 elevated.

My question is what would be the most space efficient hydro/aero system that i can build. What would you do? Ive been thinking about doing FilthyFletch's aero build up, How to build an aero setup

Can anyone recommend a simialr build or better for the space.
How about buckets?
Ebb and flow?

Would this be enough room for a SOG set-up?

I would have to say this is really based on your experience with growing. If you've never made a hydro system before or maintained one, it can be a disaster going full scale right away. Be sure to grow in a method your are comfortable with when going big.
That being said, I have a similiar room in my basement that I've designed many different systems for. After reviewing all my ideas and picking the cheapest and easiest system to work with in this area, I would use two 4x4 foot flood tables and make a SOG ebb n flow setup.