Awesome!

At least 1TB hard drive. And recommended is SSD not a mechanical HHD.

Then you'll need a decent CPU chip and ram. Intel i5 minimum or equivalent. And 32 ram at least.

You can run a node off of far less power and function, but planning to have it last is likely a good call.

nostr:nprofile1qqs9df4h2deu3aae83fmet5xmrlm4w5l9gdnsy3q2n7dklem7ezmwfcpz3mhxue69uhhyetvv9ujuerpd46hxtnfduq5xamn8ghj7dnvv45xs7tywde8g6rpvakkjuekw46nvar4vdhxgan6wumkxatzwpckk6rk0puhjdm2da5k7ce5x4kkkumjx3jkzepwdahxjmmwqyt8wumn8ghj7un9d3shjtnwdaehgu3wd9hxvmckqw0xz makes 'node in box' that are awesome. Plus they have a good community of support on Telegram.

If you don't want to purchase a node in a box like Start9 or Umbrel, the you can download Start9 OS for free and download Core and the apps even on a used laptop.