So I have a Pi Zero W I've been wanting to use and was wondering if I pick up a Pi400, can I cast to the Zero W after turning the Zero W into a Chromecast dongle or something along that line? I was thinking of having a portable computer idea that could connect to any monitor wirelessly and use the Pi400 with the Raspbian OS. Would it help if I bought a screen for the Pi400, attached it directly to the keyboard, then tried to mirror the screen? Sorry I'm a little new and have been searching around to no avail. Thanks!