If you go all digital post processing you should be able to write a program/script to convert a monochrome scan into color, so no need to align the original filter back up with the film to scan. The resulting resolution will be low with 8mm then further reduced by using a bayer filter. Figure you will be cutting the recorded image resolution by over 50% in each dimension. So a negative that made a decent 8x10 will now make a decent 4x5.
Have you thought about doing three shots with filters. For static images that will give you higher image quality.
As far as how real digital feels, I think at least half of the feel is in the output process. So if you are going to process digitally, is capture with a bayer filter on film really that much different?