I've done a 1,700 mile trip and there was a guy on here that did an around the US trip putting on something like 15-20,000 miles. It's a good bike as long as you're riding solo, but 2 up it's a bit taxed. Throw an 18 tooth front sprocket on and you'll be able to cruise all day at 75-80 mph.
First thing you'll need to look for are saddlebags and brackets. Saddlemen Drifter slant jumbos are a good choice along with some Easy Brackets. The bags can be beefed up with a couple of sheets of aluminum riveted inside. Get a sissy bar and a big tail pack mounted backwards, if you're riding solo, and you'll have a weeks worth of stuff packed away.
Depending on how you like to ride, you could get an engine/crash bar and mount highway pegs to them. It's comfortable enough for me just to use my Kuryakyn Switchblade pegs with the collapsible heel supprts, and I can stretch my legs by swinging my heels over and resting them on top of the pegs.
I've ridden 500 miles in one day without any discomfort, and I like to stop every 75-100 miles for gas and to stretch. I wouldn't want to ride anymore than that, but then I have bad knees and a bad back.
