Going into Asia from Australia

[Vandolizm]

Hey guys, im new to the forum and i just wanted some advice on where to go/what to do and how much its going to cost. I currently live in Australia and im planning to go on a motorbike trip (hence why im here) up through asia and possibly into russia if funds permit. i was planning to go with one other person but i am unsure if its more/less expensive to go solo, and wether this outweighs the fact that you carry twice the gear.so heres the trip basically.

(bear in mind that this is only preliminary and i dont really know about boder restrictions ect and if you can go from one place to annother)

Brisbane
Darwin
Ship Bike to east timor
Indonesia
ship from Mendan (Indonesia) to Malaysia
Down to singapore
Back up into thailand
Laos
Vietnam
Elsewhere?

after that im unsure weather to go into china (if i can) and then maybe even russia if i can make it that far. im not afraid of camping infact i prefer it if possible. have you guys got any tips or ideas for me? i motorbiked around thailand in 2010 and it was the best fun, but i didnt really plan it because it was relativley easy. Thanks for any help you can give me!