Yes you can. I see you live in the south. So do I. Most of mine is electric except the oven/range and tankless water heater which are propane. I have little
12v: water pump, outside door light. Everything else is 120v: frig,a/c with heat pump,interior lights and plugs, microwave.
All electric is possible but may require 50 amp service which is not at many campsites. Having a few appliances on propane makes sense, but I do understand personal preference.
I started mine with just a shell and it allowed me to customize to my families need and preference.