At a rank of 170K it's not possible to get NITs, IIITs, BIT Meshra, or any regional college like CoEP or VJTI or DTU.

My suggestion would be to nail BITSAT, VIT exam, etc and get into them. They are equally good. I know it's considered that getting into a good government college is much better than getting into these Private universities, according to our Indian mentality. However, I know really talented people from these private colleges some of which are even pursuing their Masters in IVY league in the States!