Congrats. I've owned mine for a year and 8k miles, and I have zero regrets. Yes, the car is quiet when stock, and you have no idea how fast you're going until you look at the dash
I run mine all winter. Bought a set of oem '10 wheels for $1k and 500 mile blizzaks for $800. The car does very well in light snow, and ice.
I have very light boltons. Intake piping, injectors, pumps, down pipes, mid pipe. I run cats and a resonator on the mid pipe. Definitely much better sound, but I can still drive on the freeway longer distances with no drone. I have the sbd kit. Check out gtrlife.com forum for tons of info
These cars turn heads, which is cool and annoying at the same time
Congrats. Get ready for 10's.