I am doing body work right now, getting ready to paint but i need these questions answered please!

has anyone put brightside over a very large area of bare metal?
The way the old paint is flaking im going to have half of the whole truck in bare metal so im hoping the brightside sticks as well as what i hear. id rather not use rustoleum primer but i guess i will if the brightside doesnt like bare metal as much as it would primer.

also, i remember a member here painted his dart red but it wouldnt buff well so he had to change colors. will i have problems buffing the brightside fire red with Aussie driver's suggestions?

and lastly, what should the body work be finished off with on the old paint, bondo and bare metal so the brightside sticks well?