Marina, I'm here to tell you that these bikes can do it all. If you are willing to go with them. I've done a few 4,400 mile round trips on mine with never a let down on the road. That includes some 650-700 mile days. As you'll see from the pix I've made quite a few changes, but nothing to the basic bike mechanics.
I've run the interstate with the Harley guys headed to Sturgis, until the noise got to be too much. I've hauled my 180 lbs. along with another 100 lbs. or so of camping gear on every type of road in the eastern half of the country. It just keeps going and going so well I was thinking of painting a pink bunny on the tank, except who knows what would happen the next time I rode through Texas.
Some mods you'll want to consider if you plan doing the long runs are:
A better seat-Mines a V-Star saddle type, no springs YET
and maybe a gel pad as well
A bigger or aux gas tank
A goodly sized windscreen-Mine's a NationalCycle
full fairing type screen
Floorboards
One of the hardened cam chains (if still available)
or the modified chain adjuster
This was my first ever bike and I've found little reason to "upgrade" to something different. I wanted to be able to go anywhere anytime like the old days before gas went through the roof. Now I can do it still.
http://bikepics.com/members/jazzcarter/00savage/Jack