You do not need to add any cordova folder to the path.
cordova command is a nodejs npm script, what you need is to have the npm folder in your path :
%appdata%\npm\
or if it does not work, use instead
c:\users\YourUserName\AppData\Roaming\npm\
(replace YourUserName with the name of your user profile)
What’s strange is that I don’t remember I had to change it manually, I think it should be added automatically when installing node and npm.