Fielded another call from Tesla a little while ago. Asked the rep for a firm commitment that, if I do switch to 85 (and he didn't suggest anything to the effect that I cannot), I'd get it in early January (with pickup at the factory). He suggested that, given my low sequence number, priority could possibly be given for early Jan assembly, but, he had to check with higher-ups.
Now, got the followup call: there are no guarantees according to him even if they could prioritize it and push it through given that there may be supply chain impact/considerations (?). He assured me that I'm destined to be one of the first few 60s to be built and that, there may not be more than 3 weeks separating a 85 delivery (if I were to switch) to the 60.
Oh well. I don't see much of a point in switching now and will have to rent a second car or something for some unknown period.
I'm telling myself to never, never, never put myself and family in such a situation again - this has been one long, agonizing experience
All for a bloody car!