I'm considering buying the newest Full-Node option. It says it comes with a PSU and 64 GB USB drive for the blockchain.

I have a few questions if anyone has some answers:

• Is the PSU reliable? Am I better off buying a Corsair?
• Is 64 GB enough space for the blockchain? Is upgrading as simple as swapping it out for a larger one?
• Can I limit the number of connections to my node via a CONF file?
• Does the Full Node have a Wallet? If so, is it easy to use and backup? Do I still need to run my node on my PC?