Order of assembly? From a bare shell

The only thing being sprayed underneath will be the undercoat. Cars on jack stands and I'm rolling around on my back. Underneath has been epoxy primed or has black coating(new AMD pans)but still needs paint.
It's all metal and solid but it's probably gonna have a TON of redneck finish to it.
Winter ain't far and I wont be outside working on it then lol.
Thanks
Epoxy primer DTM will stick to even cat chit. Worth the $, and you do not have to buy the highest price stuff out there for it to work. Then covering with Rustoleum is a cheap and good avenue. You can buy a spray gun cheap, that shoots a qt. or gallon of undercoat like the factory used. Some undercoats can be painted also.
Like said, I hope to have a lift by the time I hot 90!!
Don't it make you feel good to see the bottom of your car so clean and pretty!! Ya better hurry up, winter is just a week away up there!!??????