Just seen this thread and well done Niels on getting the frame!
I was in touch with the previous owner, obtaining the serial for Pip, and had been pushing to get pics of the original build spec from the Una's Interbike debut, where on various accounts, it was said to have been raffled-off at the show.
Sadly, those photos never came, but I'm super happy someone on here got the frame, and it's not going to be butchered for the sake of adding a disc tab; the theory this unique frame may have started life as a 1997 (Hei Hei) donor frame is also interesting...
Love the painted Ti. Here for reference is its brother, which perhaps holds some cue’s on a potential build direction for you.
Personally, I love the choice of the black Marzocchi on the lime-green so the colour pops against the titanium.
Arch supreme's (if you can find them) would definitely be choice.