Since last year land prices in Bangalore are falling in some areas. My suggestion to you for long term invesment you could try BDA, Bannashankari 6th stage. The price is about 1200 to 1300 per sqft for 30'x40' or 40'x60FT. size site.
Yelahnka or North Bangalore has accute water problems. Though water problems are every where.
good luck and welcome to Bengaluru to be part of Traffic choas, Respiratory diseases.
You will miss haleem but beesi baale bath is good too.