I would stick to chick crumbs until they are first feathered up, they eat so little and pasta etc. will fill them up without giving them the nutrients they need.
Then on to growers pellets, gradually and adding a tiny bit of other treats at the same time. Meal worms occasionally will do them good and they will love them!
Take them off heat very gradually, first raising the lamp by day and lowering at night for a week, then switching down to no. one for a few days, then turning off by day and on at night until they are well feathered i.e. their heads are no longer downy, then they can go into a dry, draught free house. Eggloos are all very nice if you have the spare cash but, as someone has said a basic garden shed will do just as well!
Good luck and enjoy your chickens, you will be hooked!!