Way to go dude!
Welcome to the party!
My out of the box suggestions...OEM type spoiler, clear corners (www.autodynamic.com
10 minute modification), get the windows tinted as dark as legally allowed, get into the trunk below the antenna pull back the liner and unplug the antenna (probably won't affect your reception but stops the darn thing going up and down every time you turn on/off the car...consider a switch wired to the front if you want one), consider a trunk mounted CD changer (Acura and Alpine are made to fit but are very pricey...consider one that feeds through the FM antenna feed...cheaper and work/sound fine unless you plan to totally replace and upgrade the stereo), consider an intake (cheap, easy, gives a little more power and sounds cool...unless you are going strictly for the "luxury" thing).
My Legend is shown on page 2 at www.likeparty.com
Again, welcome to the party! I just love my Legend and hope you will too. I think you got a good deal on the car. Great job!