Whoa!

You're doing a good job, and so fast too!

I hope you don't mind but I'd like to offer a little advice, in this image here you can see the streaking from the gun, although this isn't too big a deal in the priming stage it can be very visible later on.

That streaking generally indicates that the fan of the spray gun (which is the web of paint that the gun sprays) is much too narrow so it is casting thick (thick as in laden with paint) and inconsistent paint leaving that streaking look. In the prime stage this isn't a big deal as you can block it back and feather the streaks out. You can even throw a new coat on after you've done that.

What you can do to reduce this streaking is:

1. Adjust your gun nozzle to properly vapourize the paint and increase the width of the fan of paint that the gun sprays. A wider fan gives a softer edge, thus a better overlap as the softer edges can lay into each other with much less definition. A softer definition at the edge of the paint you spray down means you'll have less of a streaking effect.

2. Clean your gun nozzle to ensure no coagulated paint is affecting the spray fan.

3. Purchase a quality gun (I recommend Graco hand-pieces not automotive specific but a good gun nonetheless) that has a bit more adjust-ability and nozzle options. Ironically the gun kinda works like a carb, if it isn't jetted or tuned right (which are your nozzle sizes and mix settings on the gun) you won't get what you desire.

4. Up the air pressure and hope that the extra pressure will produce better paint dispersion from the nozzle.

5. You can also adjust your paint mix ratio to thin it out or thicken it. The viscosity of the paint will have a HUGE effect on how it leaves the nozzle and thinner mixes tend to flash off quicker and dry quicker.

I suggest you consider 3, 4 and 5. But it's only advice.