See furst of all i guess that you have got  a good rank to get in jawaharlal nehru technological university both in hyederabad, kakinada. See both college is good in their own fields. If you see the infrstructure of hyederabad is better, same with the placement, hyederabad is good. So you can go for hyederabad. 

Coming to the hostel fee .If you are admitted in the hostel, then you need to pay a caution money around 15k, and 2k to 3k monthly for mess.