Need advice!

So I am taking an partial drop... But according to my rank I might get chemical in university of calcutta and ece in jgec... So what should I take ??

My main focus is jee to secure an nit so I want to ask like which of them doesn't create problems regarding attendance... Spacious hostel or cheap hostel outside campus.. Good college library and like slightly linent academics so I atleast clear the semester exams easily with decent marks and get time to study for jee..

And just in case if I couldn't do well in jee then I have a good backup option... Please need your advices ... I literally know nothing and there is no one to guide me also