Originally Posted by
El Zilcho
Go for it. Then, when you get a bigger bike, do it again! :D
Seriously. I see no reason why you couldn't. If someone tells you that you may encounter wind that can be dangerous for you on 250, then such a wind will likely be at least unpleasant on any other bike. So, it's not really a good argument against 250.
What matters is really whether you can feel comfortable sitting on the bike for long periods of time.
Get things that help, like heated grips (may come in handy even in the summer, especially when it's chilly and wet). Make sure you don't feel any vibration in your handlebars or foot pegs. It will make your hands/feet go numb. Don't forget rain gear. :)
And don't pack your bags full on the way out. You'll likely be buying stuff on the way... :P
I wouldn't worry about technical capabilities of the bike at all. I'd focus on making sure about my own comfort. Even little discomforts can become bigger after 12 hours in the saddle.