Mirezzi....if you are patient then you could wait, but I think it will be awhile for the STi, and I think the Evo VII's will be rare for awhile. A buddy of mine at Mitsubishi said they only ordered one, but thats probably all they could get initially. But since you now have a 2000 S4, that would not be too hard of a wait I am guessing.
As for the front mount intercooler, I think thats OK, I would not want one up here in Alaska. It would get pretty beat up, and would be a nice snow scoop in winter.
But thats just my .02