welcome to the forum Gray.. advice? put on the pipes and try as is..
on the computer box is a trim dial that can be adjusted (for idle and just off idle) if needed.. It's under a plastic cap.. don't turn it more than 1/2 turn and then ride so the change can be computed. if you have access to a Co sniffer it can help you to set the dial.
stay away from the power commander unless you just can't get a good tune and save the money for gas and tires.
the Guzzi FI supplement is available from Greg Benders site at thisoldtractor.com