Good luck with this project. From an Englishman!
TBF, I taught American History and Politics and am all in favour of 1776. It was a great move by the 13 Colonies.
Just a little local story: the main church in my current home town (Maidstone, Kent) houses the grave of Lawrence Washington who died in 1619 and was an ancestor of the rather more famous George, prior to the family crossing the Atlantic.
In itself, that's reasonably interesting, but the town is also the ancestral home of the Cornwallis family, whose home, Linton House, still dominates the southern approach, so both leaders in the war and at Yorktown have family origins in the same town.
My daughter is principal of a large high school built on some former land of the Cornwallis family and named in their "honour" as Cornwallis Academy. I did tell her that her school's name would carry rather less prestige in the USA.....and received a "daughter-to-dad" scowl in return!