Eggcartons.com sells the kits, so does McMurray. I dont think they include the food tho. You should find a local supply for that anyways.
But to be honest, any feed and grain store worth anything will have everything you need, and probably cheaper after you factor in the shipping! We used a big wire cage, and set the lights up on its ceiling shining down on the chicks, this worked great! and we could cover one or three or all sides to stop drafts.
Get a McMurray catalog, they have all the info that you need to raise the chicks, and the catalog is free and a wonderful resource for breed info!
Good Luck!