The first incubator I purchased was plastic, and I don't remember the company name, but it was recommended to use bubble foil insulation around the outside of it, which only confused the incubator's thermostat. The heating element was a light bulb. It also had a fan which seemed to dry up the humidity too much inside. The turner was rough on the eggs. I made the mistake of not keeping the incubator in a room with a steady temperature, and the incubator temperature would have severe spikes, and would not turn down! I would have to unplug it. At hatch time there were deformed chicks, which of course had to be killed, and ended up with 5 healthy chicks out of 18 eggs.
I threw that incubator away.
I now use a still air Little Giant model 9200 that has the heating coil around the perimeter with a turning tray that tilts the eggs from side to side at a very slow pace. When I needed a second incubator I purchased the newer model with the heating element in the center, and the temperature wasn't staying regulated, so I took it back and exchanged it for the last older model.
The first hatch with the Little Giant, I kept in a temperature controlled room and ended up with 13 chicks out of 15 fertile eggs. I kept a log with drawings to do everything the same, and as long as the eggs are good, have great hatching success.
I read about the Colloncas, and the other South American breeds on BYC, and one of the reasons for becoming a member was to track the South American breeds to see if I could someday obtain one. The Colloncas is actually the breed I wanted most, and it happened after some time, that someone close has some! They are a different class than the modern chicken breeds. They are one of the parents of the Araucana, and come in different colors, and don't have tufts. There is no SOP.
Since they are monogamous (and I'll know for sure after experience) I believe they can be kept in pairs, and the roosters get along with each other as long as they have grown up together. That seemed to be true, because the ones I saw where I picked up the hatching eggs, had two roosters and two hens together. Their offspring was one rooster and one hen, that has to be kept separate from the parents. Possibly if the moms and dads raised the chicks they could be all kept together. I'll find out hopefully.
I was FINALLY able to take them outside for the first time today, and they were torn between absolute terror and having a total blast! 
Pretty much my usual odds, as I can get close to 50-50, but there will always be more boys in the end. 
