New England trip in July

DW and I will be traveling to New England states this summer. Planning on taking I-84 from Pa over to Conn, stopping in Mystic for 2-3 days. Then, traveling thru Rhode Island, bypassing Boston and on up to Maine. Planning on 4 days near Acadia N.P., then over to Vermont for a few days. Would appreciate suggestions on campgrounds and other places to extend this trip. I thought I could visit Newport & other local spots while staying in Mystic,Conn. Also thought I could drive along Maine's coastal hwy while staying near Bar Harbor area. Camping near Montpelier or Burlington,Vt for several days should allow us to enjoy a taste of Vermont. I know we COULD spend all summer in New England; but our journey takes us westward to the Michigan/Great Lakes area for the remainder of our trip. Again, thanks for any suggestions on locations we should consider adding to our itinerary.