Best PC build for GTA 6 + heavy mod loadouts in 2026

Building a new rig for GTA 6 + a heavy mod loadout (4K textures, big map overhauls, 100+ vehicle add-ons).

Looking at 9800X3D + 5080, 64 GB DDR5, 2 TB Gen5 SSD. Overkill for stock GTA 6 but mods murder VRAM and stream memory.

Anyone running similar pulled the trigger early? What bottleneck shows up first?