Max Ram
No, Windows 10 Home does not have a strict 8GB RAM limit. It supports more memory depending on your system configuration.
Windows 10 Home 64-Bit supports RAM sizes up to 128 gigabytes.
According to star_pilot, a 32-bit version of Windows is restricted to 4GB, and it's unclear whether that version still exists.
32 bit does still exist for some reason. Maybe for laptops I guess.
Most common motherboards cap at 64GB, but high-end options such as X299 support up to 128GB.
Might work as a simple setup, though it comes with very inexpensive kits (like Compustick) that limit RAM upgrades.