Hello,
If you want to hodl, what's the best strategy for doing so? A single wallet or several? What are the advantages and disadvantages of both options? Maybe it's stressful to use a wallet with lots of satoshis? (whereas several with fewer satoshis is less stressful, isn't it?)
If it's big enough it's okay to diversify your funds, different wallets or cex account. Don't store your BTC in one wallet, still a risky thing if you have forgotten the key or lose the hardware wallet. If you will just hodl, there's nothing to lose on diversifying the funds on different wallets, you will lose nothing but you will secure atleast most of it if something happens to keys or whatsoever errors might happen to your device.
If you really have big BTCs, it's okay to diversify it but if few only, just store in one place, dont spend too much fees if to transfer those if you only have few btc.