It'll be interesting to see what the maxes are at equivalent states of charges with the battery just heated to more normal operating temperatures (Max Battery Power off, with the car having been driven a bit.)
Since the driver page illustrates specific times to "ready", it would be best if folks could take a read where 30 minutes, to "1+ hour" are left, give their state of charge (hopefully ~90%) and then see what KWs can be produced.
On a related note, I'm mildly surprised they still offer it in the on-line store.
I've been back and forth a bit with Tesla, only about getting Luda, not as an original owner. The last emailer, by the name "Tesla", told me the reason I was cancelled was "not enough stock". The previous reason concluded ineligability "at this time". All this correspondence has been outside the 6 month window, and at least indicates they are keeping their options open for those outside the "customers who placed a P85D Model S order through Tesla". This was recently reworded from what I believe used to say something like "original vehicle orders placed before 7/17/15". Anyway, the above suggests we may have bare shelves in CA, if your name isn't already on a kit.