Epoxy sealer coat question.


Hi, I wanna start over on my last spray job. Used SPI single stage black. I wanna start over. I've wet sanded the car down close to the primer with burn thru's. I wanna spray an epoxy sealer coat to cover the small bare spots and primer showing. I started with 600 grit and plan on finishing with 800 grit. I'm going back to the original color which is metallic. I plan on finishing with 800 grit. Question is. Will this be the right plan for epoxy sealer coat to adhere to? Thanks.