The New Jersey plan called for a single house with equal representation from each state (New Jersey would have been screwed over if Virginia got its way with proportional representation).
The challenges were :
1. Lack of Experience. Since George Washington never had any experience in managing any form of Government, operating a country is a huge obstacle for him.
2. American government was placed in the middle of conflict between Great Britain and France. And it is really hard for George to remain neutral despite all the pressures from both sides
3. Many united states conducted their own local rebellions
Answer:
This letter, my very dear Eliza, will not be delivered to you, unless I shall first have terminated my earthly career; to begin, as I humbly hope from redeeming grace and divine mercy, a happy immortality.