Updating your interior doors can provide you with a huge return-on-investment. Take your time and don’t think you may have to complete it all at once. I’d recommend getting each of the doors necessary delivered. That way, if this project requires you half a year to complete, the doors will all look precisely the same. You will not have to be concerned about a style not being available. Take your time and do 1-4 doors per weekend. Before long, it is all going to be done.