So George Washington never said "
And let us with caution indulge the supposition that morality can be maintained without religion…Reason and experience both forbid us to expect that national morality can prevail in exclusion of religious principles.."
I never said they attended church regularly or at all, (they were very busy men) but they believed in God and for the most part Jesus and used those teachings (the Bible) to form our country.
The Declaration of Independence
We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness
And for the support of this Declaration, with a firm reliance on the protection of Divine Providence, we mutually pledge to each other our Lives, our Fortunes, and our sacred Honor.
I added the bold.
I don't have as much free time as you so I will only address one of your misquotes.
Here is the entire sentence.
Twenty times, in the course of my late reading, have I been on the point of breaking out, 'this would be the best of all possible worlds, if there were no religion in it!!!!' But in this exclamation, I should have been as fanatical as Bryant or Cleverly. Without religion, this world would be something not fit to be mentioned in public company—I mean hell.