I am in Mount Airy, MD. you will need to do some public charging. You don't want to regularly charge above 90% or run the battery below 20% state of charge. Anything less than 150-160 should be doable but anymore than that you will want to stop at a supercharger. Out here we have Potomac Edison and after I add in all the fees I am paying just under .11 per kwh which is pretty good. A supercharger is going to be at least double that and sometimes triple. It is doable without too much inconvenience. Plus, you will leave every day with a 90% charge so you should be stopping less.
Also, keep in mind that at 30k per year you will be out of the B2B warranty in year two. The battery and drive units have a longer warranty.
8 years or 120,000 miles, whichever comes first, with minimum 70% retention of Battery capacity over the warranty period.
Now, let's say you save $2,500 in fuel per year it would take you 2.5 years to recoup the $6,000. That would give you 1.5 years of savings before your out of warranty. So you would save $3,750. Now if fuel prices go up again or if your numbers are higher that changes things. There is also a convenience factor though because you will be charging mostly at home. You need to do some math and make sure your comfortable taking the loss on your current vehicle which is sounds like you are.