Listen to escobert on the parts advice.

And having a PC that'll keep up with gaming for more than five years or so is unlikely. Ten years would be almost impossible. Most of the parts aren't made to last that long, and even if they did after ten years the way hardware design changes over time would leave you lucky to manage new games on low settings at that point. No matter how powerful the hardware was when you bought it.

Better to plan and budget for new hardware every 5-7 years or so tops. Go with the upper end of the mid range stuff and it'll keep going strong for that period of time and serve you well until you replace it.