Barred Rocks are great! Usually friendly, smart, and hardy. My barred rock chick survived a hawk attack!

If you do get Barred Rocks... pick the ones with the darkest feathers and the most black on the front of their legs. You'll be more likely to get pullets then.
Also, any time you get chicks make sure you check each one for deformities or injuries. Check the beak and toes, especially.
Home Depot will have the lamp and Walmart usually has the red bulbs. If you use the regular white bulbs it disturbs their sleep at night.
You can put them outside when they are fully feathered but you might want to have them adjust to the cold gradually.
Mesa Feed barn has small waterers, feeders and chick starter.