You actually have to try for Private Engineering Colleges of West Bengal since Government Engineering Colleges close seat allocation at much lower ranks.

As far as private engineering colleges are considered, Heritage is better than the other private engineering colleges in West Bengal. In that case I would suggest you to opt for Heritage Institute of Technology and I am quite sure you will get admitted. If the general admission seats are filled, you still have the management quota where you need to invest some hard earned cash for an admission into engineering.

The best thing would be to sit back home and try reappearing for the test next year if you are not a dropper already.

Best of luck.