Since we only have one install, and one visitor so far, we can afford to be flexible with the install plans.
The weather for tomorrow and Sunday while below our 50 deg cutoff, looks reasonablly clear and pleasant.
All of the rear wiring can be done with the hatch and doors closed, so should not be any problem with the temp. The Insight is a nice solar collector. The ECM wiring is the only place where The door needs to be open, but that can be done in a bit over 1/2hour. The predicted 39 deg with a 10-15mph wind would make it seem a bit chilly, but In my opinion it could be done.
You know how New England weather is, you have to take advantage of a known reasonable day, rather than try to plan a week ahead, as things can change so fast.
Your call. I am willing to give it a go. The hardware is ready to go.