Paper wallets on encrypted USB vs HD wallet?

Hi :)

I'm very new to crypto, and I've been thinking about buying a cold wallet. But until then, I'm storing my paper wallets (generated offline through bitaddress.org) on an encrypted USB drive, which I only access through a PC that's disconnected from the internet (I actually boot from a USB when I do it).

Is my current method considered safe enough? Convenient enough? Ofcourse I have multiple copies of the USB drive so hardware fail is not necessarily an issue. Also I'm aware that the papers wallets expose the private keys.

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