See # 127 for the military/foreign policy implications of trying to form a new nation while Georgia and South Carolina stayed with the Brits.
"The clause itself was stricken out at the request of delegates from South Carolina, and Georgia, but with the agreement of New England states."
This is what you originally said:
"In both the 1770's when the Declaration was being debated and signed by delegates from the 13 states, and later in the 1780's with the Constitution, 11 of the 13 states were willing to start the nation with slavery outlawed.
These two things do not mesh together. If you have no further proof, it appears you extrapolated quite a bit from 2 delegates asked that it be removed.
This does not at all imply that all the other states were in favor of it.
To say it was only 2 states that caused it to be removed is a stretch. It may be that 2 states objected first, but it would seem quite reasonable to believe that if they had not, one of the other remaining slave states would have done.