Don't know about the third row seats because I don't have them. However, our R/T came with the mygig infotainment unit and no bluetooth. The dealer installed it. My wife also bought a new Caliber and had the bluetooth installed by the dealer. It was about $475 (Canadian) to get the module installed. I believe the cost varies depending on the radio unit you have in your car. If it has buttons for UConnect, then it is one module and if you do n ot have the buttons, there is another. Both of ours had the buttons so I am unsure if the cost is more (or less) if you don't have the buttons already in there.
Be sure to haggle with the dealer because we were initially quoted much higher prices. The modules are available on ebay as well for much lower prices than offered by the dealer, but then you have to instal or arrange installation.
If you have auto lights, you turn it on using the headlight switch on the turn signal stalk all the way to "Auto". If it doesn't say "Auto" on the switch, you don't have it and I don't know iof it can be installed after the fact.
Hope that helps.