Grats on your purchase.
The fob from the scrap yard will not work unless it is programmed by mercedes.
I seen somewhere a video on repairing your original fob. Check youtube.
To get console apart you have to take the radio out first, need mercedes radio keys.
Tires on our car are important, I run rain tires, Falken's on front and G-Max's on rear and like this combo. I have burned through summito's and Goodyear f1's
Since you are in nc/SC area you should join the crossfire group for the dragon run in fontana.