I went for the platine.
I've seen this one print very well on both smooth and textured matte papera before, as well as on glossy papers, films, canvas and metal. Normally, my choice of smooth matte paper would be BC Pura Smooth, with some Timeless for protection (which adds some Dmax and saturation and can also give the paper a slightly waxy, burnished, almost pearlescent sheen that isn't completely matte, but isn't quite lustre). German Etching and Torchon both worked very well as textured media. But these were for large prints, where the paper texture is a completely separate aesthetic choice with little impact on the overall clarity of the image - not the case for a small print.
IGFS was also an option, but I discounted it since it's such a physically fragile paper, that seams to crack and creasr at any opportunity.
Will see how it turns out.