How even should primer be?
Some drywall primers don't hide very well - they will however seal the drywall when applied at the proper square ft coverage (about 300 sq).
One coat of primer properly applied is sufficient.
Where you want two coats is the finish coat.
I usually recommend Glidden products. The Home Depot carries Glidden Ceiling Paint. Some independant dealers carry Glidden E-Z Track Ceiling Paint - it goes on pink (easier to tell where you have been) - and dries white...
If it is possible you could of sprayed this out with alot less hassel and even if you didnt know how to use one you would have a good handle on it after you did the primer it is alot faster easier and looks and lasts longer.
But like Mr Paint said the primer is fine if it isnt covering all the way it is to seal your drywall. http://pictureperfectpainting.20m.com/
is a site to my home page,