I finally reached the point where I felt comfortable painting some of the armor pieces! I decided to use Krylon satin white for the armor, and I was a bit overzealous with the paint as I was only able to complete 2 coats by the time I got to the bottom of the can. Fortunately, the paint is pretty cheap!
I was able to paint (you guessed it) the chest, back, front and rear torso, and the bottom piece. I'll buy more paint today to continue the process. I may stop after 3 coats, but I won't be surprised if a 4th coat is needed. After that, I will follow up with a satin clear coat and go from there.