As someone who built their SFF primarily for emulation, you may have issues in some games with that CPU since some emulators (Like PS2) can be pretty demanding on the CPU and rely on single core performance. I'm using a 5700X for mine and there were some games that I had trouble with until I overclocked to 4.85GHz and tuned some settings in the emulator. Overall the 3200G will run just fine but certain games may be unplayable.

Also I'm sure jealous of the 3060 12GB, as I'm currently using a GTX 1650 which is working surprisingly well for most things but I'd love to upgrade to a 3060/4060/4060Ti.

Also I'd spend the extra $6 for OLOy Owl 3200MHz CL16 RAM.