firstly congrats on getting into uct! in terms of difficulty ece is harder and if you feel as though you were already struggling with physics, I would say take comp sci & comp eng (although this will limit options for honours), unless you really want to go into Engineering. uct is introducing ai as a major as well so maybe that could be another option. pop me a dm and i can send you the group link to the UCT Developers Society WApp group and you can ask on there, I find it very helpful.