Hii Yash..

I think you should go for IEM Kolkata instead of sliet with IT department.

The course and curriculum of CSE and IT departments donot vary much in WBUT and the placement scenario are also same. So, I don't think you will regret opting IT instead of CSE under WBUT curriculum.

And IEM, Saltlake Kolkata is a renowed college and the placement here are quite good and the college is well-known throughout. The college is counted as one of the best private colleges under WBUT and one of the best college in Kolkata.

So, my personal suggestion would be to choose IT from IEM instead of CSE from SLIET.

Hope it helps.

Best of luck for your future