You will likely want to get the plastic pieces for the column replaced so it doesn't look like crap. Your option there is either junk yard or dealer for those.

As far as the ignition goes you should be able to get a new switch from either a dealer or auto parts store.

My recommendation if you want to use the same key for all the locks on the car is to take your original key and the new lock to a qualified locksmith so they can set all the tumblers to match the original key.