Hello Biky

Congratulations on qualifying JEE!!

At this rank of yours, you won't be able to get B.Tech degree course in IIT Kharagpur, although you can get Architecture course( 5 year course of B.Arch) . Thus , I would rather recommend you to go with IIT Gandhinagar( as you might be getting a beter option here, according to the branch). Or else, if you wish, you could also check for the college predictor link-https://engineering.careers360.com/jee-advanced-college-predictor?icn-JEE_Advanced-clgpd&ici=JEE-Advanced-article-text-mapping

I hope this helps you. All the best!!