Since you haven’t mentioned the branch you are interested in, I will assume you have no particular preference. Now, the primary factor to consider is if you value the brand of the college or the branch of your choice. Consider the following points
The best option would be to choose IIT Dhanbad CSE. It’s true that it won’t offer the opportunities and exposure that the top 5 IITs would but for me branch is more important than the brand name of the college. So, choose according to your preferences.