Several years ago, I created an arrangement of Desperado in the kye of "C" using a Lenny Breau type chord comp. When I saw your intro in the key of "G", I decided to see what it would look like. It's much easier to play in "G".
Both arrangements are available at FrettedInstrumentsNYC site at:
http://tinyurl.com/9o6wa
It's on the "Advanced" music page.