A wafer thermostat is a great choice, and 2 light bulbs seem like a good choice so is the computer fan. As for the thermometer, I would go with a glass thermometer and a digital. If you could get your hands on an old mercury thermometer, possible an old candy thermometer at a garage sale or something like that. I have 2 mercury thermometers, and they are both great thermometers. They react to temperature change quickly, and that's something you want in a thermometer. They don't have wires, or take up space, so they work really great.
As for the egg turner that would allow you to turn all the eggs at once from the outside, I made one for my cooler incubator.
Here is a link to the one that I made. You may have to scroll down the page a bit before you find them.
https://www.backyardchickens.com/a/the-chick-factory-incubator
As for the egg turner that would allow you to turn all the eggs at once from the outside, I made one for my cooler incubator.
Here is a link to the one that I made. You may have to scroll down the page a bit before you find them.
https://www.backyardchickens.com/a/the-chick-factory-incubator