Haldia

Well, you can go for the counselling first then wait for your turn. You may not get it at first round but you can get your seat.

According to the present records of placements, Haldia Institute of Technology is far better than Galgotia.

You might get Haldia. IEM's closing rank for all the streams is generally much higher. I am not sure about Heritage. Put your preferences accordingly and hope for the best.

Well, being selected for the highest package totally depends on you. There is no fixed criteria for the highest package for any of the departments in any of the engineering colleges in India. So it totally depends upon your skills.
And for your answer to the question you asked, one student from our campus got placed in Bosh and his package is around 8-10 LPA. There are many more students who are on a good salary package.

In IEM, civil branch is not there.
In Heritage, you will not get civil branch.
You will get Haldia college either in the 2nd round or the 3rd round.

WBJEE 2018 College Predictor
Use your WBJEE 2018 rank to see where you can get admission at the link provided below:
See the courses, colleges & rounds you may crack
The result is based on admissions data of WBJEE 2017
Get resources & insights on colleges & courses
https://www.shiksha.com/b-tech/resources/wbjee-college-predictor.

JEE-MAINS 2018 College Predictor
Use your JEE-MAINS 2018 rank to see where you can get admission at the link provided below:
See the courses, colleges & rounds you may crack
The result is based on admissions data of JEE-MAINS 2017
Get resources & insights on colleges & courses
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

You can go to the college predictor link https://www.shiksha.com/b-tech/resources/wbjee-college-predictor
to know about the same. Good luck.