Fantastic guide. I had nearly no idea what I was doing before seeing this. Also, thanks for quickly moving through windows, links and typing quickly; I hate when tutorials waste your time like that.
When I download, it says: "You're about to upload 595964 bytes wirelessly. This could take some time, and you should consider uploading directly with a wire. [y/N]:" and it fails to upload. What to do?
This deals with hot/cold package downloading, and it happens when the library is not installed. Try reading it again and follow the instructions. It tells you "you should consider uploading directly with a wire"
I had a similar issue, what I did was I clicked Uninstall PROS in the PROS menu in VSC, and then Installed it again. That seemed to work and it installed it with the toolchain!
If you want to use 6m drive on EZ Template you can set the ports of the left drive motors to {1, 2, 3} and the right drive motors to {4, 5, 6} and change the ports and reverse the motors so that they work with your robot