Thats great to hear. 4 weeks is actually farily doable, this is assuming that we do about 350 kms a day, which may not sound like much but once we are into turkey and after 350 may be difficult.
I am planning to take off for 4-5 weeks off work which should be enough. I have read about a couple of guys from Belgium, who did it in 4-5 weeks on bikes they bought in south India.
About the camping part, I belive that would be minimal, perhaps places around turkey, Iran and Pakistan, none the less I am packing my tent and sleeping bag.
I would prefer staying in cheap hotels, since would really need a decent nights sleep.
Let me know what you think, and will send you my contact details.
Send me your email address also and will send you the route plan etc...
Have not yet gotten around putting the website up yet.