Need Advice/Opinions!!

IHas370Z?

So I've been anxiously waiting to graduate college so I could get my new Z. That time has come and the model I want is 6 MT, Monterey Blue/Grey Leather, Sport, Nav, Splash guards, Kickplates.

I searched local inventories and one dealership has this EXACT model, except it is 7AT instead of 6MT. I went there today and asked a salesman hypothetically what the price would be, and when I asked for invoice he did not hesitate in saying that would be the price (making me confident I could get a couple hundred under invoice, at least). He also said if we were to order the car with 6MT, I would get it at invoice.

My question(s) to you guys is how long should I expect to wait if I was to order it with manual, as I had originally wanted? Should I take the 7AT instead, considering it is otherwise exactly what I want? I have never owned a manual car; I've been eagerly looking forward to making the Z my first, and was really pumped about Synchro Rev Match to help me out. That being said, is the 7AT the wiser decision?

Thanks in advance for any input/advice you guys might have.