does anyone know if there's any desktop tools I can use this transcription model with? e.g. something where like Wisper Flow/WillowVoice but with custom model selection

There is Handy, an open source project meant to be a desktop tool, but I haven’t installed it yet to see how you pick your model.

Handy – Free open source speech-to-text app https://github.com/cjpais/Handy