Agreed on all points, but would like to throw in my 2 cents for a different #1, partly because it will come sooner than the 3, and partly because it will change everything. Though unlike your milestones, this one comes more from the speculation dept:
1) Tesla Energy comes of age: The day it becomes clear Tesla will have another large stream of revenue.
Success of the 3 is critical. But as long as most of the revenue comes from cars, the argument can still be made that Tesla is mostly just another automobile manufacturer. While that's the case, it will continue to give some investors pause due to the way the sector is valued, and the perception that there are vultures all around it.
In the near future, a TE announcement will be made that forces the investment community to start looking at the company as something else entirely***. This announcement will contain some combination of the following: Significant pre-orders for Powerwall 2.0/Powerpack 2.0, very large-scale utility project(s), further statement on demand that will overwhelm GF capacity, etc. It could come as soon as Jan. 4th.
**They may decide instead to hold some of these cards close to the vest, though that doesn't seem to fit the mission statement. Either way, selling a whole lot of something other than cars will obviously be a big positive for the stock for many reasons. Just a matter of when. 2017 looks like a big year for TE.