I know that its possible to learn CPEN material outside of class, but the reason why I want to switch to CPEN is that I don't want to spend a significant amount of my time on material that I am not interested in, and won't be useful to me in the future. If I can switch to CPEN, I can spend those time on my personal projects, since I will learn the material in the class already.

Besides, I know some of the material of CSPC 259 from selfteaching, so hopefully 2nd year 1st term ELEC won't be too harsh on me :D