I bought a 2001 Jackal last month. Got a good deal, what with the hard bags, windshield and Outsider oil filter relocate kit. This is my first cruiser and first non Japanese bike. Tires were worn though, so I took a trip to Dahlonegah to get e new set mounted up.
Banzai, if you are looking for a dealer for tires that knows Guzzi, I recommend http://ridershill.com/
in Dahlonegah. It is 3 hours, or 150 miles from me, and looks to be about the same distance from you, though your ride there would be a lot more scenic than mine.
I buy the majority of my tires for my bikes there, and as they are a Guzzi dealer I figured they would be the best place to go for the Jackal. I got a set of ContiGo tires, mounted, balanced with new tubes for just over $300 ride in.