Hi all !,
I have similar plans and time-table, starting late Feb / early March from Darwin to Singapore then ride SE asia for 3 months.
Air / sea freight to Dhaka then 2 months following the Himalayas ( have mates there just now and quite wet - so not expecting to go quick including Kathmandu to Lhasa if I can find 9 other no-hopers ), then pickup Pakistan, Iran, ( North Iraq if OK ) Syria, Jordan, Turkey, Greece then slowly West to Islay in Scotland.
Finish there about October.
Good to keep in touch / meet if not tag-along for parts.
Cheers and keep in touch !!