Hi! Finally, this is the route we have planned:

Day 1. Arrive to Newark airport - Philadelphia
Day 2. Philadelphia
Day 3. Philadelphia- Lancaster County
Day 4. Lancaster County.
Day 5. Lancaster County - Gettysburg- Washington DC
Day 6. Washington DC.
Day 7. Washington - Niagara Falls (a long day driving!)
Day 8. Niagara Falls
Day 9. Niagara Falls - Finger Lakes (Seneca Falls).
Day 10. Finger Lakes (Geneva, Ithaca, etc)
Day 11. Finger Lakes - Adirondack Park (Lake George)?
Day 12. Lake George and sorroundings.
Day 13. Lake George - Rockport - Gloucester
Day 14. Gloucester- Boston
Day 15 and 16. Boston
Day 17 Boston- Cape Cod - Provincetown.
Day 18. NH Coast - NYC
Day 19-23 NYC

Some questions and doubts:

- What do you think about the route? Are we missing anything really worthy?
- Is it worth to stop at Adirondack Park? We'd like to do some family activities on nature -kayaking, biking, etc- and we won't be able to get to White Mountains as we first planned. Its too far away in our route. We have doubts about if we should spend at Adirondack Park almost 2 days or it worths more to better know the NH Coast.
- Should we go to Adirondack Park instead of the Finger Lakes?


Thanks again!