2020 Gem E2 Brakes- so many questions

Hello All,

I’m fairly new to the forum, but the wealth of knowledge here is awesome, so hopefully you all may have the answers to my questions!

A few Brake questions.

Rear Brakes: I want to completely replace the rear brakes.
Is there an after market complete Drum Brake package (Not Gem - meaning not crazy expensive) that will work for this vehicle?
This may be a dumb question, but do they have to be Drum Brakes or can I upgrade to Discs on the rear?

Front Brakes:
I read LithiumGods post on using Razor brakes, I’m not sure what year vehicle he was fitting them to or if he was successful in his venture, but would they work on a 2020?
If so, can he or someone let me know the Razor brake package I will need?
What ceramic pads fit the Razors and where can I get them?

BTW Wheels are 17" x 7.5"

Any help appreciated and thank you in advance.