Stealth. Considering the amount of high poly models I've dealt with, and also the fact that I do quite alot of poly reduction for Armada based models, I would suggest you not attempt to poly reduce anything above about 15,000. Speaking from my own experience, it took me three days to poly reduce the Courageous, and that was only just over 10,400 polys. Why not just stick with the current batch of BC and SFC3 based versions? Theres some exceptional work thats been put into them, and in many respects are better than the higher poly versions, that are around. Also with high poly CGI models its far better to rebuild them using reference images only.