That's a large area!
My favorites are State Parks in New York State.
Here is a
There are wooded sites in Western NY and the Adirondacks and Catskills, Lake side parks along Lake Erie and Lake Ontario and my favorites is in the Finger Lakes Region wine country. Drop dead gorgeous scenery and waters. Ok, so I am prejudice because I grew up in Upstate, NY. We travel from Florida every summer to our favorite, Sampson State Park on the East side of Seneca Lake above Watkins Glen. NYSP are generally around $27.00 a night for out of state RV'rs, with a maximum stay of two weeks. You can get back in after 48 hours.
Not to say Vermont, New Hampshire, Massachusetts, Connecticut, New Jersey and Pennsylvania don't have many beautiful parks as well. I personally favor Government Parks & State Parks over KOA's and private parks and there are also some very nice county parks.
2008 Modified Surveyor 303
2010 Dodge Ram Laramie 4x4
2013 From FL to Pick up Surveyor Islip,LI, PA,NY,VT,NH,MA,CT,NY and Home
2014 Sebastian Charleston,SC to Finger Lakes, Lake Erie, Lake Cowanesque,PA and home
2015 Sebastian to PA,NY,WI,MN,return to NY and home
2016 GA,SC,NC,TN,KY,OH,PA,NY,to Sebastian,FL