Sorry home stagers would not be my choice for hanging art . We have a large collection and honestly I hang little until I have my furniture at least chosen and know where I want it placed .We just moved in August I still have 5 peces that are not hung because I have not figured out where the furniture goes for sure . I might be tempted to go to a good furniture store to choose my funiture and then hire an ID to help with the art display A good furniture store might even be able to provide at least someone they use .

I would use a home stager if the goal was to place the furniture you already have in the best way. I don’t think they would have the skills for an art collection but could put up pictures here or there. If you want this to go well and have many layers to your plan like hanging art, buying some furniture now and some later, spacing over time etc, I would go with an interior designer as they will be able to support it all. I know someone that used a stager for their entire home but she also really knew what she liked etc and just needed a bit of guidance pulling it together