If you do physics as an undergrad, then EE as a postgrad (or vice versa), you will be required to do some catching up to cover the missing courses. It will also be harder to get admitted if you switch fields.
If you like electronics more, I would back the idea of doing an EE bachelor, you can attend some physics courses along, or learn it on your own.
p.s. electrodynamics is a typical EE course as well (might be called differently, e.g. electromagnetics).