If it's 8 years old, it's mostly rapid access film and not lith film, which means it is kinder for pressing into continuous tone use. In fact, it is a hard film to use for lith purposes, even though it is sold for that purpose. Typically in lith use, it was difficult to find that perfect sweet spot between pinholes that required extensive spotting, and high contrast without eating up fine print. Kind of halfway between continuous tone and lith. I hated rapid access. But in your photography camera, it might act well. I would use pyro, Buetler's, or Acu-1. You might try high dilution Rodinal, except that would be very slow development. Try Buetlers at double dilution, or pyro. A good ballpark to start finding film speed would be ASA 40. Although film speed could be all over the place before you found your 10 needed zones. BTW, for continuous tone, don't use 1A sfelight. You'll need something darker and deeper. It was originally mean for printshop darkrooms equipped with NuArc safelights, typically. It's probably not a whole lot different for this purpose than X-Ray film.
As an aside, Anitec was originally Ansco, if you follow the corporate acquisitions.
Please report back with some results.