I disagree eight the other poster. Please use whatever distribution you feel most comfortable with!
With KDE Plasma you might want to wait for the upcoming 6 release, since they simplified a lot of stuff (and also Wayland per default iirc?). Kubuntu will take longer than Feodora to ship though.
I personally used Plasma a lot, and I understand the being overwhelmed. What I did was just working with it, and figuring stuff out along the way. I think KDE Plasma is awesome, especially for customization!