@Tracker: 256TiB?!? That sounds extremly big. Do you use LDD, LeoCAD or MLCAD? I used LeoCAD for the LMS Explorer, but MLCAD would have been much faster (but it takes more time to get used to it). As far as I know, these three programs use only one cpu core.
The main parts of my hardware system are a AMD Athlon 64 X2 6400+, 4 GB RAM and a HD4870 1GB
Here is a comparison between the 1:1 LMS Explorer model loading times in LeoCAD and MLCAD: ~2 1/2 hours in LeoCAD and maybe 1-3 minutes in MLCAD.
PS: Yes, maybe some things in the cuusoo guidelines are not really clear.
@Kohila: If you want to build the model or a part of it, you will need lots of bricks. I hope, that there are enough of them at bricklink etc.
Besides: Maybe I can send you the file of the 1:1 version.
fun fact: I have sent the file to several people in this forum, because they requested it, but I never get an answer back, if they have used it. Maybe it is too big to use it or it takes a long time.
regarding the costs and the bricks: Hmm, I don't know, how many bricks the inner structure would have, but I think, that a complete LMS Explorer model (with rooms etc.) contains several 100.000 or even millions of bricks. That means that the whole thing would cost at least ~50.000€.