4. Import public address to my hot wallet
Do not do this, it will make the funds accessible from your blockchain account. As mentioned, you just need to pay the coins from your blockchain account into the paper wallet address with just typing the address in...testing the account with a tiny transaction is also a good idea.
He's talking about importing the public address but not the private key - making it a "watch only" copy. This is possible on e.g. Mycelium on Android. It's good for quickly checking your cold storage balance.
I'd also strongly recommend *not* typing in BTC addresses. Copy and paste or scan QR codes. If you make a mistake typing an address, your coins are gone.