flat black paint job

I have a 74 daily driver Scamp that I need to put a quarter panel on.I did this car several years ago and painted it yellow which I'm sick of.Thinking of just doing the car in flat black.Do you use a single stage with flatting agent or prime with satin clear coat or what?Want to be able to maintain the paint with ease and keep it flat.As it is my daily driver want to keep the $$$$$$ down as low as possible.Possible bumble bee stripe what color?Ghost - shinny black - different color?As I'm old I want the Scamp to look old school
HELP ME DECIDE
By the way it's a /6 with header - 4 barrel - OD manual tranny - black interior
all chrome and trim in real good shape