Can't speak to BRAW performance yet, but if possible, you might want to hold out until they release the next round of systems.
My guess is that the next round of systems introduces models with more RAM than that and possibly an even faster processor.
Currently the Intel-based Mac Mini is still available at the top end; as they are transitioning ALL of the Macs to Apple Silicon that leads me to suspect there may yet be a higher-end Mac Mini model coming out with the next chip to be released, and I for one am hoping it has a more powerful GPU and can hit 32GB or more of RAM to more adequately support Fusion.