That video is pretty outdated. This video is more up to date and is a good starting point for World 1.

The biggest thing is routing the minimum necessary Waddle Dees and here's a document for the main categories. Also feel free to join the discord and we can help you more in there ^.^ https://docs.google.com/spreadsheets/d/14cR0NCe.jO4HqSlo-9OmO6-Ty3KO2s824dPXVd2-rTj8/edit#gid=966245204

Not patched. It is kind lf inconsistent depending on what you are trying to do. Here's me showing a consistent setup for it.