What RAM and SSD should I get for my Alienware r14 build?

Hello everyone, I am building an alienware r14 after receiving the motherboard case and power supply. I have purchased a sapphire amd 6700xt GPU and ordered an amd ryzen 7 5800x CPU. I don't know what RAM and SSD i should get I just know I need ddr4.

Alienware Aurora Ryzen Edition R14 Setup and Specifications | Dell Hong Kong https://share.google/M4yx9EWPxSwn84IE7

that's the compatable parts list, I would appreciate some help on this thank you very much.