Regardless of your choice, it will be able to run Valorant at max graphics easily, so it doesn't really matter. In general though:

1. Yes
2. Yes
3. I don't have any personal experience with them, but it should be fine because I haven't heard of any huge scandals with them/
4. I'm not too sure about this, I'd recommend going on a tech forums or discord server like https://pcpartpicker.com and ask them about this.

You did not just say Xeppaa