I am attempting to build my first DIY incubator out of a double door old coke fridge. My plan is to build each side to be able to use at different times. I have searched and searched for an exact list of what I will need. I am concerned about putting the wrong fan, thermometer, heater, etc. in it. Help!! Please. My turkeys, ducks, and chickens are producing more than I can fit in my 42 egg incubator. Thank you!!