I did the exact same as you but starting in s.e. asia (east timor), and overlanded t europe where i currently am.
I def overdid the gear thing.
I have with me a 5DII, 7D
50mm f/1.4 (this was lost or stolen)
430exii flash (silly taking this, rarely use it)
1.4x extender (pointless taking this, also rarely used it)
I have a website I post for each country, though i'm about 25 countries behind!
(last post was China, but ive almost finished my time in europe!)
More recent pics though up on this page if you're interested
If i was to change my gear, i would just take the 5D, the wide and the zoom lens.
I'm also carrying around a 13"x220 laptop. it's almost 8kg in a packpack, so a big pain to carry though i've managed to hitchike on the back of cement trucks in monsoon rain, be crammed like sardines in overcrowded indonesian buses. My limit for walking with it all when moving between places is around 5km, then legs just become dead tired. But when taking pics i usulaly just carry the camera with one lens. Less is more. Oh it was usefull taking two bodies at one stage though, as the 5DII broke for around 3 days due to water damage during taking this photo: https://www.facebook.com …3240999538&type=1&theater almost exactly one year to date
good luck whatever your choice, you'll have an awesome time
feel free to ask any questions about where i went etc