Building AI workstation

I'm planning to build my first PC, which will be an AI workstation. Aiming for a double GPU setup, hoping to find a RTX 3090 in good condition second hand.

The PC is going to host an agentic AI system I'm developing, using fine-tuned LLMs and classification pipelines for vision and audio.

Since I'm new to building, I sat down with Gemini 3 Pro to figure out a component list. Due to some temporal hallucinations (e.g., the AI claiming it is currently 2024 and the RTX 5060 Ti isn't released yet...) I don't exactly have full confidence in this list.

So please help me out. Does this build make sense? Note, I'm planning to add more RAM eventually, as well as the second-hand RTX 3090 mentioned before. Is anything crucial missing from the list?

Chassis: Lian Li LANCOOL 216 RGB Svart

CPU: AMD Ryzen 9 7900 3.7 GHz 76MB

GPU: ASUS GeForce RTX 5060 Ti 16GB Dual OC

Motherboard: ASUS TUF Gaming X870-Plus WIFI

RAM: Kingston 32GB (2x16GB) DDR5 6000MHz CL36 FURY Beast Vit AMD EXPO/Intel XMP 3.0

SSD: Kingston KC3000 M.2 NVMe SSD Gen 4 2048GB

PSU: MSI MAG A1000GL PCIE5 II 1000W

Cooler: Thermalright Peerless Assassin 120 SE Svart