I've seen the Sangria Sled in primer and I only wish mine looked as good. The color looks like it will be killer when completed...I've enjoyed following the build.
If you're using laquer primer, It has to dry, but it also has to shrink and fill in all the imperfections and sanding scrathes. The sun is the best and I used to wait about a week during the blocking to make sure the shrinking was done. If previous coats haven't dried, successive coats will trap solvents. Follow the specs sheets from your supplier as to film thickness and build rate. I don't use laquer any longer; I like the epoxies because of very little shrink.
I spray the top first; spray from the middle to the drip rail on one side , then do the other. I start at the bottom of one side at the door and go up; I walk the length of the door and front fender, then half the hood from the center out, do the front of the hood , then the other side including the top of the fender. I do the whole second side from the bottom up then the decklid from the center out on each side. On the section left ( rear fender and quarter panel to the door edge) I leave the door slightly open so I don't oer spray where I started. I tend to use slower reducers and more reducer so the paint stays wet and I can blend 2 surfaces together as I go around the car.
Some success today. I started checking everything and found first of all that the regulator on the gun was not operating correctly so who knows what psi it was running. I replaced that and mixed a little more thinner and it seems to have better flow. I did the two ladders and the plank and that helped with the roof although being as vertically challenged as I am it's still a reach to the center of the roof. But it looks much better.