The OP lists 10K B&W and about 5K C-41. I am not sure if this means frames or rolls?
If this is frames, I calculate 97.2 hours to scan 10K B&W frames at 35 seconds per frame at 4000dpi auto focus and auto exposure no cropping. If this 10K of frames is in precut strips of 6 frames that would be about 1666.7 strips. Inserting each strip can take about 30 seconds for the Coolscan 5000 to bring in the strip, provide thumbnails of each frame and be ready to begin scanning. This process for the strips will add about 13.9 hours to the 97.2 hours for a total of about 111.1 hours.
Now if these were 10K rolls of 36 frames each, then the scanning itself can take 3500 hours (145 days) + 500 hours inserting each 6 frame strip for a total of 4000 hours or 166.7 days to scan the b&w film. Keep in mind there is no ICE for true b&w film scanning and therefore that will have to be done in post.
For the C-41, ICE is available and each full res frame scan can take about 55 seconds per frame. So if it is 5K frames the scanning can take 76.4 hours and inserting each strip can take 6.9 hours for a total of 83.3 hours. If this is 5K rolls of 36 frames then the scanning can take 2750 hours + 250 hours inserting strips for a total of 3000 hours or 125 days. Because of ICE, there will be no need to remove dust and scratches in post.
C'mon, that's less then a year's worth of scanning . . .