A week or so sounds a bit ridiculous. The only thing you need to do is install Xcode, then run a script which installs Homebrew. You can even use Homebrew Cask to install macOS apps, and MAS to install anything else from the App Store. All-in-all from installation to scripts completion, maybe an hour?

Source: Our IT department is a bit of a nightmare with Macs so I have to set them up for all our devs.