"So now I have a new bump in the road. I did an overlay with google earth and the plat map and it appears the pond is shared with two properties behind me. Ugh..."
That is a real and unpredictable issue. May never be a problem, but you have no way to know.
Yes, did some searching on it and looks like it could be a nightmare... or not.
The upside is that the two lots that are adjacent are thin, deep 2 acre lots so it's at the very back of their lots, with trees along the back. The downside is as I understand it, if they decided to have weekend floatie parties and leave their beer cans all around their side, they could.