Ok, the thing is, do not always go by they act like male and female because it can sometimes turn out to be two of the same sex and yes, they can act like opposite sex. I once had got a pair of White Caps and soon afterI got them they laid eggs... there were 4 eggs and then both White Caps were sitting on the eggs... okay this told me, I had two females because the males in Pionus do NOT incubate eggs! So then I sexed them and sure enough they were two females!!
I am like about 80 miles from you then, and I am at a higher altitude like 4,500 feet and my birds just do not think about nesting in December, but sometimes in January or February if we get a good warm spell, it will promote them to want to nest. I did one time have a pair of Blue Heads go to nest in January and laid eggs and was even fertile but then the cold coming up through the nest box like it does and the hen can not regulate the proper temp, so therefore the eggs did not hatch. If your birds are indoors then you could stand a chance of them incubating eggs properly.
My caging for my breeder pairs has always been wire caging. My box sizes were the Grandfather style boxes and was 12" x 12" square x 24" high. You can use a boot style box as well. I've used both types, and were wood, I did have two metal boxes as well. I have like 4 of my Grandfather style boxes which are in very good condition as I bought them only a year or two before I got out of breeding in 2009. I always made it so they could not chew up their nest box except for around the entrance hole and had wire mesh around it. I have photos of how I did it for the wire caging if you want to see them.
Food was basically their normal diet but up the protein a little and I'd give them like Soak & Cook Mix. Be sure to offer extra calcium in cuttlebone form if a hen is in the egg laying mode.