Monthly cost of a RTW trip??

[Gotan]

Hi,

Firstly my apologies if this has been already discussed (I would appreciate to be directed to those discussions). I have been looking for two days and I only found old information and I'm running short of time.

Let me tell you that my girlfriend (10 years been together, kind of wife) and I have been dreaming with a RTW in a bike for the last 4 years, we have been saving and the idea was to do it in 2015.

Well, I have been retrenched, our Australian visa is about to end (we are both Chilean)... and we have some money (good redundancy package ) . And this is the perfect time to make the trip, in our 30s but still no kids . Her job is not too great, she already quit because we have to leave Australia.

Normal people would say we are doomed: no job, no house, no debts.... but you know that's a blessing.

The problem: Instead of having a year to plan the trip , we have like three months.

I'm doing the maths, the dream is to travel a year, mainly Europe, Russia, Mongolia,China (China is a problem apart, I already read about all the problems and cost, we will see when near china) South East Asia, if money allows Africa and then Americas.

After buying the bike (probably a klr650) and some flight tikets and equipment, we have near 30.000 USD for travelling itself.

My plan is to try to spend 1800 USD per month (900 Each), we will travel 2 up, camping, using couch surfing, cooking ourselves (she does de cooking to be honest ). Avoiding restaurants and hotels. I even thought in limit my speed to 80 or 90 Km/h to save in fuel. If we can accomplish this budget we will have some spare money in case something goes wrong or to travel for more time.

So my questions are:

do you thing my math is ok? or I will spend the 30k in the first 3 months?

Considering the way we are planing to travel,

how much should I expect to spend monthly? (I know some places are more expensive than others, any "world average" or regional info will be highly appreciated.


The last month or two have been really crazy, we have to decide if look for a new job or hit the road... HIT THE ROAD was the answer, but I don't want to have to stop travelling after 2 or 3 months, at least a year is the target.

Is real fun all the planning, but doing it running short of time is stressful too.
Talking about that, in one week we planned our trip across Australia in a little car, to see Australia before leaving, locals say we are crazy, but I think it should be quite easy do it in a car.
Here the map:
http://goo.gl/maps/4GDrS


Again, my apologies if there's another recent thread about this.


Cheers and thanks.