Build PC for the first time

I’ve had 0 PC knowledge , but I had bought a 5070 Ti last year and I’m ready to build. I’m based in Singapore and aiming for an all-white aesthetic.

Use Case: 70% Coding & AI Modeling (LLMs/Stable Diffusion), 30% Hard Gaming.

Parts I already have:
CPU: Intel Core Ultra 7 265K (Prefer Intel for my dev work)
GPU: MSI RTX 5070 Ti Gaming Trio OC 16G
Case: Lian Li O11 Dynamic Mini V2
SSD: Samsung 9100 Pro 2TB
AIO: Lian Li HYDROSHIFT II LCD-C TL

Planned Purchase:
PSU: Seasonic Focus GX V4 ATX 3.1 850W
Motherboard: MSI Z890 Edge TI Wifi
RAM:
Fans: Best way to set up the airflow in the V2 with this AIO?