its not deterministic like that. Stake varies considerably everyday and even the whole year you don't know what you end up with. Even if on average it is 5% for the whole of the money supply.
But yeah, all you need to do is send nav to wallet and leave it on. You need to have it on all the time to maximize profit
by this do you mean to just have the wallet open on your desktop? or are there any other settings to change in the new wallet?
If it is protected by passphrase, You need to unlock it to the staking mode! Watch out to only unlock for staking and not for sending, for your own security.
How do i unlock it to the staking model? I don't seen anything in Preferences to allow this.