This looks like a hardcore trip. How long will the whole thing take?
Taking a girl with you on a trip like this doesn't seem like a good idea, better go it alone... much less of a burden for you, where you are already carrying your own burden by biking across that terrain and in that distance.
Plus 4500 km in 90 days is 50km a day of biking, across hilly and mountainous terrain in all kinds of weather. Serious business and lots of work for your legs.
Taking a girl with you on a trip like this doesn't seem like a good idea, better go it alone... much less of a burden for you, where you are already carrying your own burden by biking across that terrain and in that distance.
Plus 4500 km in 90 days is 50km a day of biking, across hilly and mountainous terrain in all kinds of weather. Serious business and lots of work for your legs.