GCS2000

Hello everyone. I am about to build my son (with him of course) a gaming PC. I have been out of the "staying current with everything" game for a long time, built 100s of PCs though so no issue there. Just would like a little guidance on what motherboard and ram to get please. Naturally I would imagine he will want blinged out RGB stuff but that is not 100% required just preferred. CPU - Ryzen 3700x air cooled GPU - 2070S 500gb NVME drive - additional mechanical HDD installed as needed 1440P UW monitor He may or may not get into o/c in the future right now want rock solid build for him to game with is friends who all left him behind on Xbox and went PC. TIA for your advice.