Most current papers are "optimised for digital" which means "not optimised for straight response or equal response in each channel; we expect you to calibrate it out in your printer profile". So there are not many papers available that will give a good straight optical print without having the odd hue shift or crossover; some of the Fuji papers are quite bad for this. Certainly you can buy some Endura Metallic and give it a bash, but it comes on big expensive rolls, has little dynamic range and might not give you accurate colour. Definitely try printing on plain RA4 paper first to get your process working reliably before using the super-expensive paper.

I would suggest if you're interested in the metallic look to order an 8x10" metallic print from your local pro lab from a digital file and see if you like it. Maybe you could even get the lab to sell you some paper off their roll if they're feeling generous. The metallic has a very nice glow to it when lit diagonally - it looks like backlit transparency - and works best IMHO with highly saturated colours. It doesn't glow so much in the shadows and loses highlight detail easily, so aim for an image with narrow dynamic range and no delicate highlights.