Imho hardware wallets are better for "every day use" than keeping life changing amounts on them.
So it depends on how much value is on those "few btc addresses with their private keys".
The funds OP doesn't need to spend in the near future can stay nice and easy where they are.
Also if there's a little more computer knowledge (for example to install a Tails OS USB and boot from it now and then with internet off), use of cold storage may also be a solution. But only if OP knows what he does.
While maintaining large funds on an airgapped device and the rest on a HW is a good option as well, why would holding everything on the HW be a potential problem? I think the level of knowledge necessary in order to use both at the same time is much higher than simply using a HW, especially as they're much easier to use through the Ledger/Trezor interface. The chances of messing up with an airgapped Electrum are higher imo as soon as you don't have that much of an idea what you're really doing. I've been personally using my Ledger mostly and some paper wallets every now and then, but I trust my Ledger more than any other method of storage and never made even one little mistake through it.