hello aayushi 

 Based on last year studies it is very difficult to get either of the two college at this rank but you should definitely fill all your choices as the spot round is unpredicatable in nits .

You would have definitely  heard about NATA(National aptitude test for architecture). It is to architect what JEE is to engineers. It give access to all the architectural colleges in India.So prepare hard for NATA and with NATA score you can get into top architectural colleges even nits and spa .

best of luck