Hi Evansville...there's a few issues I see with those numbers.
First is the price. That looks to me like you've chosen a 2012 SL with the Floor Mats option, and that price includes destination. When I first got my RAQ, my dealer put $37,420, and after I accepted (but before leaving the dealer), I specifically asked about the destination fee, and he said there wouldn't be any...I thought it was just dealer BS, but 3 months later rolls around, and sure enough, they didn't charge me a destination fee. It is absolutely possible for them to discount the car to cover the cost of your destination fee, so you should absolutely ask. Anything less than $37,420 would be even better...remember, there are dealerships in CA that are charging $2000 under sticker. If they can do it and still make a profit, your dealer can take off $850 or $1000 and be just fine.
The next thing is the miles and the residual. Do you really need 15k miles? This is obviously a hugely personal preference, but it does seem to me like a bit much for a car that can't do long trips. Dropping down to 12k miles will raise the car's residual value, saving you money. I was given 43% residual on the 2012 SL with 12k miles at 39 months (this was last Friday, January 27 -- residuals and money factors do change every month, so this may have changed for Feb.)
Same story with the money factor...I was given .00175 money factor on January 27th, and my credit is honestly nothing special. It was right around 700. An 800 should be easily able to qualify for .00175, which is the Tier 0 (aka the best possible) rate on the Leaf. Remember, money factor times 2400 equals the interest rate. So a .00175 is a 4.2% interest rate..not horrible, but not spectacular for a car, either. The $7500 credit really makes the lease worthwhile, and Nissan knows that, hence the crummy interest rate...
Can't really comment on money down or sales tax, as that's different everywhere. In NY, we are required to pay sales tax on all monthly payments up front, the moment the lease starts, so my Sales Tax + First Month's Payment + DMV fees came out to $3300, with a monthly payment of $461. My monthly payment is actually high considering the price I wound up paying for the car and the money factor I got because I had a trade in that I was upside down on by $1800.