Those temperature guidelines seem a tad on the hot side to me, and my baby chicks tend to agree. I brought some day-olds home a few years back and plopped them into the brooder under a heat lamp I had calibrated to exactly 95F. Even though they had plenty of room, they were panting, and acting very uncomfortable.
I raised the light so the temp directly beneath the lamp was 85F. But it was still too hot because the lamp was heating the entire brooder, so I swapped the 250 watt lamp for a 100 watt incandescent bulb and produced at temp under the light of 85 and the rest of the brooder was much cooler. That was exactly what they preferred. Since then, I started out all my new chicks at 85 instead of the recommended 95, and since then, I've learned that you want to brood your chicks at the coolest temperature you can and still have them behave normally.
The reason for erring on the cool side is that chicks are a lot less likely to develop heat related issues if you can keep the brooder on the cool side while still giving them a warm zone under which to warm themselves.
But the very best way to insure the best heat for your chicks is with the heating pad system. It's virtually fool-proof. Read about it on the forum in the thread, "Mama Heating Pad for the Brooder".