I got a very quick reply from the company which has printed for me, and we are going to test print on another kind of smooth paper called Photo Rag. I must say that they offer an excellent service! The first test printing was done on a structured paper called German Etching. It is a gorgeous art paper but maybe not ideal for my paintings. Hope this other paper turns out well and that it doesn't get blurry, otherwise I have to figure out something else :)
Above: German etching paper