As per Ur Dates.
Revenue ticket will cost around =Rs. 51405 Thai Airways( Onward=10hrs, Return=17hrs) ( If u use atlas for booking u will get 5X Points =2570 Points which u can transfer to many partner)
If u want to book through points its expensive 80K Points + 7150+ Forex Charges.. IF u have those points ok No point in Buying it as it will be expensive and you would be paying more.