I've got three bikes and the missus gets uncomfortable after about an hour and a half on the Fazer 1000, about an hour or so on the MT01, and about 30 seconds on the v-raptor.
It is effing miserable for the pillion if they are constantly fidgeting, best thing to do is try it out on home turf first, maybe try riding to Wales or do a mini tour round the West coast of Scotland top to bottom. That way you can gauge the comfort for you and your pillion, and work out the best way to load the bike up with gear.
Would reccomend a Starcom intercom, nothing worse for the pillion whnen you are trying to communicate through muffled helmets, also alows both rider and pillion to have seperate MP3's plugged in. Pillin can get very bored.
The bike itself will be no problems.
If you decide to go anywhere and want a place to stop for the night, you might be able to stop off at mine if you give me a wee bit of notice – i live in Cannock, but do understand the Scottish accent!