Fron Acadia NP to Niagara Falls

We did the same trip, but in reverse. We started at Four Mile Creek campground. Highly recommend that campground. Try to get a lakeside site. I think we were in site 232 which was a great site. There was a little drop down when backing into the site, but nothing that could not be handled. Nice space on that site and next to the common water faucet. Site 240 was roomy and private as well. I would recommend a trip to the Canadian side to Niagara on the Lake. What a gorgeous area. Especially, if you like wine. Some great wine tours. Next stop was Letchworth. I cannot remember the site, but it was nice. The park is fabulous. The canyon is actually at the other end of a really beautiful piece of property. Outside Bennington/WoodfordVT we stayed at Greenwood Lodge & Campsites. Super nice owners. A couple of lakes on the property with canoes and boats available. Surrounding area looked a postcard picture of Vermont. Pretty rolling hills and covered bridges. Then we moved on to Camden ME at Camden Hills State Park. Stunning harbor town with Mount Battie there with stunning views. Our last stop was Acadia.
If doing it again, we would have worked in a stop around the Finger Lakes as well. Again if you like wine, great wineries and stunning scenery in this area.