Kerala Kalamandalam,the temple of dance and music is in Kerala,its a century old institution where dance and music is taught and practised in the age old traditional way.You may like to visit this place.
Kerala has everything to offer to you,i mean,dance,music,organic farming,saris..so rather than travelling around south india i would suggest to make Cochin the base and travel in Kerala.
Accomodation and travel is very reasonable and comfortable,im a native of kerala and i have lived there for 20 yrs,so in case u wanna knw anythin more,pls send a msg...
NB: I dont do this for money,neither am i a representative of any travel agent or tour operator...for a living i work as an Operations Lead in one of the flagship companies in Bangalore.
This is just a footnote to dispel any misunderstandings that my fellow travellers may have.