I have 5 different USB drives with Wallet files locked in a safe. I keep my public addresses to those files on a spreadsheet on my computer. Probably a better way, but thats just how I do it and am comfortable with this method.
And how sure are you that the coins actually get sent and received in your already stored and tucked to safety wallets bearing in mind that lately some Bitcoin transactions don't get confirmed? I will like to know if there's another way of knowing this apart from the blockchain info.