What’s the Ideal Gaming PC for 1080p at 240Hz With Future Headroom?

I'm planning a new gaming PC for 1920×1080 gaming at Ultra or maximum settings, with the highest and most stable FPS possible. I already have, or plan to use, a 1080p 240Hz monitor, so I want a system that can take advantage of high refresh rates in competitive games rather than being limited to 60–144 FPS.

My main games are Counter-Strike 2, Dota 2, BeamNG.drive, Fortnite, EA SPORTS FC 26, Valorant, League of Legends, Team Fortress 2, Grand Theft Auto V and Online, GTA V RP, Garry's Mod, Minecraft, Apex Legends, and Rust. The most important titles are CS2, BeamNG.drive, Fortnite, GTA V and its online or roleplay modes, Apex Legends, and Rust.

I'm looking for a balanced complete configuration, especially recommendations for the CPU, GPU, motherboard, and RAM. Competitive games should have the highest practical FPS and strong 1% lows, while demanding or CPU-heavy games should remain smooth with minimal drops. I understand that some games may not sustain 240 FPS at maximum settings because of engine or simulation limits.

I don't want the most expensive hardware available, but I do want a high-performance build with sensible headroom for the next few years. I'd also like advice on whether the CPU or GPU matters more for these games, whether 32GB or 64GB of RAM is appropriate, and whether it is worth preparing for a future upgrade to a higher-resolution or higher-refresh-rate monitor.

I have not set a strict budget yet because I first want to understand the ideal configuration for these requirements. Specific component models would be especially helpful. Availability of local bundle deals may also affect the final parts list.