Even though, based on ISO standards, this film is only medium speed, the negatives at EI 800 appear dense.
My experience with short-scale films like this is to use an EI based on a mid tone, rather than low value (per ISO) or shoulder value (per reversal). I have seen films in which decreasing development does not change the horizontal position of the shoulder. That is to say, irrespective of development, it is always a short scale film.
More testing on this film will show how it actually behaves, but my impression is an EI of 1000 might actually give the best images for many subjects; the film inherently won't have good shadow detail without the highlights going off the shoulder.
More to follow...