You're contradicting yourself in the storage heading #1 and #3. Make that one way or the other, but not both. IMO, room temp is for the day before you're setting them in the incubator. The cooler temps you mention are if you're storing them for several days/weeks. This just needs to be cleared up.
The majority of folks incubate at 99.5F, so you can make a suggestion but I wouldn't state what you have is the solid temp.
Otherwise, this is on its way to being a great article!
When you have made adjustments, send me a message and I'll change my rating.
This is an excellent example of how paying attention to differences in our flock members can be key to keeping them healthier. Your study is very educational!
Just pictures isn't helpful really. It's nice but for someone to want to build this, there's no explanations of anything. A materials list, a plan or drawing as well as photos of the inside would make a difference.