One of my works in progress (WIP) is a Lavender and Lace angel and is a large project, as most of them are. I have the linen mounted on a roller frame so that I'm not continually moving a hoop. I would do the metallic threads and beading last so that the metallic thread isn't split by the frame or, if you choose to use a hoop, by the hoop and the beads aren't crushed. As for any supplies not available, I would go to a local needlework shop if you can and see what they can substitute.