Re: Are pedals required?
You might want to consider whether you WANT to use pedals (not just if they're required). The electric bikes I build (which can be assembled using the DIY electric bike kit on your personal bike) have the option of using pedal, or motor, or both. I like having that flexibility because sometimes you don't want to put in any effort (all motor), sometimes you want a workout (all pedal), and sometimes you want a combo (both).
Just my 2 cents!