Thanks guys. In answer to a couple of your questions, i was spending roughly $1000 US dollars a month in Asia and Africa (not including flights and shipping). That required staying in cheap hotels and camping a bit. Fuel is a major cost, so travelling slower brings the daily budget down.
I didn't have knobblies unfortunately for the snow, i came across it a bit unexpectedly. I had to tie ropes around the street tires for traction. After fitting the knobblies in Cameroon, i can recommend it, the bike handled a lot better in the dirt and the higher profile tires also gave me some extra clearance.
Sean