There is a big thing you are missing, you will not get the $7500 rebate, it goes directly to the lading company. If you go to the Nissan website you can get the details:
Excludes taxes, title, and license. $1,999 initial payment required at consummation. (Includes $1,800 consumer down payment, $199 first month payment.) (INCLUDES $8,150 manufacturer's rebate applied to $199/Month lease. Offer valid only when financed through Nissan Motor Acceptance Corporation.) Subject to residency restrictions.
The $8150 rebate includes the $7500 tax rebate. Do not trust the dealer for info, they will lie to get you to buy it. EV world wrote about this:
However, if you lease a Nissan Leaf, then the full tax credit offsets the amount you owe during the lease period. The credit gets paid directly to the lease financing company and is factored into the lease payment, so no need to worry about filing it on your own return. Thanks to the credit, Nissan offers a lease deal on the Leaf for $199/month, for 36 months, with $1,999 due out of pocket. Ford and Chevy are making similar offers on their electric vehicles. If you averaged in the required down payment, then your true lease payment would be $255 per month. If you spend over $250/month on gas with a traditional vehicle, then it’s possible you could wipe out the entire cost of the lease and added costs with the money you’d save on gas.
Sorry to deliver the bad news.