This is my second batch of chicks. A year ago, with my first batch, I followed all the "rules" about starting at 95 degrees and only dropping the heat 5 degrees every week. They didn't even see the outside until they were nearly two months old.
This year, having read lots more from old timers, I had the heat lamp completely turned off by their fifth day of life (since they were inside the house which is kept around 72 degrees). They went out to the coop at 2 weeks old. I turn the heat lamp on at night only if it's going to be in the 30s. They're bedded in deep straw and in their own section of the coop that houses the full-grown chickens so they get some of those birds' body heat.
After comparing the notes I kept last time and this time I see that this batch feathered much more quickly and is MUCH more energetic. The first bunch was quite lethargic in a way that I now recognize my older hens get during the extreme heat of summer when they are miserable. I think I nearly cooked my first bunch with that 95 degree nonsense. After all....could any broody hen keep her chicks at 95 degrees?
So, my advice is to get them outside with access to dirt and grass as quickly as possible. Watch them closely at first and check again if there's any big drop in temps. They'll show you if they're cold (piling up and calling distress peeps).
Trust yourself to be able to observe your chicks and make adjustments according to how they act.