That's a lot of miles, good thing it's mostly highway. Plan on summer traffic on slowing you down on I-95 soon.
If you still find yourself going to Wells a lot, you might want to get a commuter pass from the Maine Turnpike Authority on your EZPass. You can go unlimited between the York Toll and Wells for $42.50 per quarter (3 months). This beats the $1.75 each way you pay now. That should get you a little extra gas money.
http://www.maineturnpike.com/
http://www.ezpassmaineturnpike.com/d...rRateChart.pdf