Will a 30kWh Leaf meet my needs? For how long?
I assume that with a 10-12 hour L1 charge, I should be able to just about cover my daily commute, correct?
Once I have L2 charging, is there a point at which capacity degradaion is so bad that I might not make my commute intermittently? Regularly?
Should I expect to make my 75-mile secondary drive initially? When might that no longer be possible due to range?
Will driving consistently at highway speeds reduce my battery capacity in the long run?
Based on my experience with new to me a 2016 Leaf, I'd say:
1. Yes. It could be a problem in the cold, but it is April and the PNW doesn't usually get very cold even in winter.
2. No, at least not until after the battery warranty expires, or you are not far above the capacity warranty threshold and conditions are exceptionally poor for the PNW (snow, sub-freezing temperatures).
3. Yes, though you might need to stay closer to 60 MPH than 70 MPH if it is uphill at all or you want any climate control. Might be iffy in the winter rain when you need heat and airflow (or dehumidification) to be able to see out the windows, but probably OK if you slow down. At 60 MPH with climate control off you should be able to do it down to about 75-80% SOH.