I humbly disagree with others that 16 Gigz of ram is not enough. A. For the first server it is definitely enough, before you know what you really need. B. In current rampocalypse it would be crazy buying ram without knowing that you really need it (only for it to sit there unused later). Your setup is fine and only time and your inner hobbyist selfhoster will tell later what you need.

Edit: and fyi I curretly do have 48 Gigz 😂, bought it a year ago very cheap and my system uses 10. Therefore I have set a high ARC to 16 GB. I used to try local LLM but didn’t find it useful for the high power consumption. Just wanted to show you where my opinion come from. Nowadays I wouldn’t buy more than strictly necessary.

I’d recommend using eficient procesors as well, so with ryzen with grafics and efficience it’s GE at the end. I recently switched ryzen 5 5500 for ryzen 5 4600GE (because 5500 doesn’t have efficient variant) and the consumption halved (- 30Wh). And both were/are basically idle with very low loads.