Nice ride! Congrats!
Looks like you've got all the accessories covered.
As a newbie to biking, I would recommend having fun in moderation. Given the bike's excellent flickability and its torquey engine, you will often be tempted to ride hard but do so cautiously and only to an extent where you are comfortable. Always roll with your essential riding gear on (helmet+gloves).
Remember the engine break-in period till the first service (1K kms) - Maintaining ~45Km/hr - It will be a struggle
Oh and don't worry too much about the mileage. The FZ is not your typical mileage-focused commuter motorcycle and loves to be plonked around. Some folks just don't get it. You can expect it to return ~35Kmpl when ridden hard. It all really depends on your riding style.
Welcome to the Yamaha family!