Don't take a pillion campin. They take up far too much space (even the small ones). It means you can take a proper size tent which goes on the back seat with yer double infatable matteress, double sleeping bag and arm chair. most importantly you gonna need music. small radio or mp3 player.
Even better if you get someone to go in a small van. then they can take everything and you get to ride yer bike luggage free.