So how about putting a team of people together to do it:

- One person scans the frames to a server that the rest of the team of like 30 people has access to via terminal services so they don't have to download all of the images to their own computer. There could be more than one person doing the scans as well (one person and server for each reel of film), but they should all use the same type of scanner and same scanning settings to keep the look consistent.

- The rest of the team meticulously positions, crops and resizes each frame and saves it to another folder with a filename of the frame number like 00000.png. They could also do a quick rough crop of each frame that includes some extra around the edges and save that to another folder as a backup just in case any of the frames are messed up in the final product.

- Once all of the frames are created, import them into a tool such as Vegas and do the color correction and export the AVCHD.

Disk space is cheap, so I don't see that as an issue.