I've given L1 of CFA, currently doing my Bachelor's.
Let me tell you it's not easy, it requires a lot of time and since you have a Science background you'll need extra efforts in a few subjects.
As for prospects there are multiple roles especially IB, Valuation etc that specifically require CFA to be cleared or at least some levels of it.
Not sure how CFA would help in MBA placements as I have no experience in that but my peers who had cleared L1 in bachelor's itself converted finance roles easily, they had an advantage. Of course your knowledge experience and all those other things factor into it.