Since you haven't primed yet, you can use the primer to practice. You can also use the primer to get a feel for how thin the paint needs to be when using the sprayer. Practice spraying dusters and full coats using the primer until you've acheived even, full coverage. The same number of coats should apply to the SF mix.
You only need to wait a couple of hours after finishing priming before spraying the SF mix, but overnight is best. Otherwise, I think the general rule of thumb is 30 minutes waiting after dusters and 1 hour after full coats.