2. Charge in cubby and in the back always on.
I really like the always on 12V outlet in the luggage area. On hot days I put my 12V cooler back there and it keeps my snacks and beer cold even when it's 105 degrees in the car. Never need to mess with buying ice or the wet mess when it all melts.
For those of you thinking you need to accelerate super gently to get good mileage, it's not so. I drive in a mostly sporty manner and get great mileage simply by avoiding high cruising speeds (unless I'm in an unnatural hurry). It's especially important to avoid acceleration that necessitates braking. You can accelerate relatively briskly and still get good MPG, just let off and coast so you don't need to immediately lay into the brakes. And increase your following distances so you don't have to lay on the brakes simply because the car in front of you hits their brakes to turn off.
My fuelly badge reports all 26,000 miles since I took delivery and there has been plenty of less than ideal MPG driving conditions. I don't know of any other AWD this roomy that can touch the fuel economy of the CX-5.