This is what I have done b/c it is what I read- I started at 95, mine are 3 weeks old tomorrow and they actually seem to like it around 80 right now which is good b/c I had to separate an injured one so the two brooders are sharing a heat lamp right now. But I had it at 80 today before the injury b/c they were all hanging out as far from the light as possible.Yes agree not going to put them outside til at least 6 weeks.
I heard/read to start them at 95* & lower by 5* each week... but this is my first hatch so still learning