I have a BA and MA in English from a top US university, and more than half my lifetime later I'd recommend against it unless you are really sure you want to teach it. As an undergrad I thought I wanted to teach English, but I disliked the graduate studies in the field and I didn't much like teaching at the junior college level when I tried it. Being able to write well has been an enormous help in my alternate career, but you can get that in any course of study that forces you to write frequently under direct criticism. If I had it to do over again I'd do some combination of HPS and CS with a smattering of economics; right up your alley. UBC has a good CS department for sure.