Regarding the wait, I grew up in PA and the wait (at that time) was 3 business days. That was a real PITA if you travel and see something you'd like to buy. Then I lived in Iowa for a while. there you get a purchase permit and fold it and keep it in your wallet. In NC (where I am now) there is similar provisions. The permits cost $5 per gun and the wait in my county is 10 days (or more). However if you have a CWP, there is no wait and actually no permit is needed. I pull out my CWP, Driver's license, and credit card and 15 minutes later I have the gun in the car.
Enjoy the new gun! I have two S&W M&Ps, a 9 and a 22 and I also have one in a CO2 powered BB gun.