WELCOME TO BACKYARD CHICKENS!!!
Raising chicks is so much fun and so rewarding! It's possible to integrate at a young age (4-5 weeks old) if you wish. Using a heating-plate-type method along with "see but don't touch" works wonders. Here are some helpful links:
Kick The Heat Lamp: Better, Safer And Healthier Options To Heat Your Brooder
Mama Heating Pad
Pseudo Brooder Heater ‘Plate’
See but don’t touch
Have fun with your new babies!!