[Eliot Ness]

It shouldn't be a problem and you'll probably find as many proponents supporting electron flow as you will conventional current flow.

You know, I've completely rewired at least three cars and installed an AC unit in one, and not once did current flow really cross my mind. Positive and negative polarity did, but not once can I recall trying to sort out what direction the electrons or holes or whatever were flowing.

My advice is to pick what theory makes the most sense to you and stick with it for the sake of theory, although since your course is going to be constantly referring to electron flow that would probably be the one I'd choose. And just to ease your mind, no matter which theory you espouse, the radios and cars you work on will still function the same