Quick thoughts:
- The Phantom Spirit 120 SE comes with a tube of TF7 thermal paste in it. It's not absolute top-end of paste, but I think for a 7600x you're probably going to be okay and don't need to buy separate paste.
- B650 PG lightning is a perfectly good board. 168 EUR isn't even that bad a price - I've seen it cheaper, but also for more. May depend on how long you want to wait.
- The RAM is good. It has a 6000-CL30 XMP profile that works perfectly fine for AM5 processors.
- Power supply is rated as "speculative position" on the PSU tier list. If you're not familiar with the list, you may want to poke around on it and see if you can find a more established model for roughly the same price.