Seriously? You i*****s (not the word idiot but a race) really don't read do u? OP mentioned new delhi.

On a sidenote, OP, regarding the ridiculous power outages and non constant voltage ouput by power lines, how are you going to address power outages?

I second what the other guys have mentioned on a "forever to roi", and the fact that you probably earn more renting out that 120sq area.

You would probably still profit more than 10 times over your potential mining profits by simply renting and converting your income to btc.