damn here is the result after 46 hours...
i need to change the light and most of all, to work on my strata texture... it looks like sh*t...
anyway... i am going to do some other thing for the next 2 to 3 days and come back to it ^^
i must admit that i can't stand waiting so long to see the result of a render... i just need to do some more experiment on TG2...