thank you for your help!
- I don't know why people use Atmosphere on sysMMC especially since Atmosphere supports emuMMC. You can totally keep your setup the same way with Atmosphere
- Fuses only affect downgrades so if you never plan on downgrading, fuses are irrelevant. By the way, the only reason one would downgrade is if there is a better exploit on lower firmware versions such as untethered coldboot
- This is the guide I always recommend to users on how to setup Atmosphere