Since you purchased, you are eligible for up to $7500 in Federal tax credits. Is the delivery date on your avatar correct? If not, unless you purchased on or before 12/31/2013 you will need to wait until this time next year to claim them.
You are however eligible to apply for the CVRP rebate immediately: http://energycenter.org/clean-vehicle-rebate-project/nissan-leaf-requirements" onclick="window.open(this.href);return false;
If you car does not already have the white stickers, you will need to wait until the license plates arrive. If the delivery date is correct, you should have gotten your plates by now. Application: http://apps.dmv.ca.gov/forms/reg/reg1000.pdf" onclick="window.open(this.href);return false;
Not sure what you mean about the "bigger screen without that awful sound bar."