Oh, it'll never run on a 4090. 17B is the active parameter count, not the total param count (and "active" doesn't mean you can slice just those params out and put them on the GPU — which parameters are active constantly changes, even per-token. "Active" just means you get tokens faster than a dense model). It's 109B total parameters, so you'd need at least 54.5GB VRAM just for the weights alone.
A Framework Desktop, Mac Studio, or Nvidia DGX Spark should be able to handle the Scout model locally though... Maybe even at FP8, depending on how much context you need.