Hydroponic Greenhouse setup for warm weather

I am pretty much a newbie here and wanted to understand the setup requirement for a hydroponic rooftop greenhouse.
I have a clear space of about 1000 sq. ft. where i intend to build this system. The rooftop get uninterrupted sunlight throughout the day.
I want to grow mostly herbs along with some leafy greens. I wanted to go for a vertical tower hydroponic setup which I was importing from China.
The weather in calcutta is mostly hot reaching an average of 35 degrees. Please suggest me on how I could set this up.
Thanks in advance!