I've been lurking for a while, but this thread finally convinced me to go ahead and make an account!
1. Loosely assuming the available options will be similar to the Model S, and the same standard features will be available (give or take SC), I would be set on getting leather seats, the sound package, glass panoramic roof, and the SC (if it is indeed made an option). I'd consider getting the Autopilot option if the SC is standard, but that's purely the engineer in me wanting to show off. It'd just be a commuter car for us since my wife has the SUV for road trips, so no need for an extended range battery. I'd be fine with RWD as well. So I guess I'd be looking at hitting the mid $40Ks for this.
2. Definitely buying this. Had a 2000 Galant that I kept until it was 10 years old, and currently have a 2010 Altima that is paid off that I plan on keeping until the Model 3 drops. I plan on keeping the Model 3 for just as long. If the Model 3 ends up becoming obsolete quickly enough to make me want to upgrade, then I will just sell it and upgrade and eat the depreciation. But I'll hedge against that, as I'm fairly conservative when it comes to car features. The current model S and its options offer more than enough features that I'd want out of a car.
3. I plan on reserving it as quickly as my internet connection will allow me. It's not a matter of if, but when I get this car. I'll be in the market for a new house by then, so I'd prefer to have the house before I actually get the car. So I don't necessarily need to get the car at first delivery.