Confused to choose between domain subjects in CUET

I was initially planning for econ, maths, accts and english for ba econ hons

then i found out about sscbs and thought of giving GAT aswell.

But now, a senior adviced me to take BST instead of econ because it would be much easier than econ and mark scoring. The problem here is that I like studying econ and not BST, but it is not about what I like or I do not like, I just want marks. As long as maths and english is there, I doubt that I'd have trouble with my desired courses. I have a great accounts tuition teacher so I do not think that I need to drop accounts, but I am in a dilemma between BST and Econ.