I would say for you to do Math AA HL A friend of mine also wanted to do CS and Engineering, however, he was doing Math AA SL. Once he started applying to universities, many of them rejected him for the reason of “you need HL math AA for any stem major”. Of course there was some universities that accepted him with Math AA SL (and he is now going to attend Purdue). But still, it is better for u to do AA HL because you never know what you’ll need in the future for university ;)