Hi Rob,
we made this Route last year, and it was fantastic. We started mid of August from Manali, and the first two days were very hard, cause of two days monsun rain. Some parts of the street were not available, and we had to push our Bikes.
After the Rothang Pass wether was good, Landscape is fantastic, People are very nice. A hard part is also from Patseo to Baralacha La, but it depends on the condition of the road.
If you want additional and/or special Infos, dont hesitate to write me a privat message.
here some Links for Information and photos:
http://www3.utsidan.se/corax-e/http://www.sentient-entity.pwp.blueyonder.co.uk/manalileh.htmlhttp://www.koausa.org/Ladakh/pictures.htmlgreetings from Vienna
Georg