Congrats for the MX! I enjoy so much my car, I hope you will also.
Insurance: it's complicated because it depends on many factors. Like in my case, we have a second car for the two teenagers, one learning to drive, so it's rather high (even if they absolutely don't have the right to drive the Tesla!!)
Anyway, if you don't get answers here, you should try on the AVEQ forum, in the Tesla section.