There is other software that I suppose could do it.
Problem is that others who do this professionally have a true DI setup, with proper hardware and all.

WHS is just finishing the "right" eye as we speak, well, when I say just, I mean by tomorrow morning, it should be done. Then the compression will start and I'll be able to delete those TIFF files currently taking up around 2TB.

I certainly hope the final result works out with all that!