I decided to uv unwrap in zbrush and keep a relatively high poly model so I can texture it in substance painter. I ran into some issues when trying to unwrap my model because of the topology which I fixed by filling in holes, using inflate brush to prevent parts from being too thin and then using z remesher in stages rather than trying to do it all at once.
I then used uv master to unwrap the separate meshes and projected and divided it onto the original mesh until no detail was lost.
then I was able to export them as objs and texture them in substance painter. When adding these textures into maya I also had to find some workarounds for the metallic texture not working which I solved by going into the hyper shader and connecting the out colour to metallic.