Hey, that is an AWESOME looking ride!! I love the Mustangs look, especially the GT500. You see "run of the mill" Mustangs all over, they are a "dime a dozen", however, you don't see GT500 all that much. I just saw one last month, white with blue stripes.
Bottom line, if you are happy with the deal and the car, then that's all that matters. If I could have gotten a similiar deal, I'd have a GT500 in my driveway too!
It's all what you're happy with. I almost bought a Camaro Pace car last month, we had hammered out the deal for a week, they almost came to the numbers that I wanted so I agreed to take it....they already took my car away, I'm signing the papers and with 5 min to go, then the salesperson walks in and says, "they offered you more than they intended on your tradein. The numbers we gave you were for yesterday, today these are the new numbers." I could not get out of that dealership quick enuf. It wasn't that the difference was not affordable, it was the principle of the thing. I had agreed to some numbers they gave me, then the changed it not thinking I would pull out. I did. And as of now, almost 8 weeks later, that Pace car is still there, still for sale with even more miles on it.
They had given me a good trade in price on my 1LT Camaro, but I was still paying them $15,000 more for the pace car...once they change the numbers I was NOT happy with the deal and walked out.
...so looks like I'll be keeping my paid off 1LT for awhile!
Looking around for a good 2011 2SS Rally Yellow with black stripes for a good price....but if I could have gotten a similiar deal as you, I would have jumped on it too!
As long as you are happy, don't give a hoot about what anybody else thinks.