Hi, Robert. From my experience, I have been happier with a coat of B-I-N primer/sealer than any of the thinned paint type primers. B-I-N has enough solids to make it worthwhile to tint if you are going to paint with a color other than a white or light pastel. The small independent paint store should be happy to do this for you and will probably sell you a better quality of paint than the "Big Boxes".
Be sure that you put the B-I-N on when you can open the windows. It is shellac based and the alcohol solvent can get to you when it evaporates. Be sure that you don't have any sources of ignition around either.