Problem with spraying the one part paint is technically you should let each coat dry, then sand, then recoat the next coat. Because it is so thin to spray, you won't get much build up. You can hot coat the paint, but it can have problems with adhesion. This means you use up a lot more time and energy than if you used a two part paint, which will get a great finish with three consecutive sprays to build up the paint.

If you are going to use Brightside you'll be better off rolling and tipping, using the brushing liquid. This actually leaves a very nice finish if you get it thinned right.

Or, you can base coat with roll and tip and spray a final coat after sanding, which would produce the nicest fastest result for that product.