There are a lot of ponds in the satellite view of Cedar Creek. I suspect that means you have the possibility of clay subsoils on your property.

Have you taken any soil samples at depth?

Do any of your neighbors have ponds? If so, ask them about the construction methods on their pond.

If you do have deep topsoil, then you should be able to sell that portion of your excavation spoils.

Very few ponds get built exactly to the original design - nature usually has a little say in the matter. Keep planning and balancing what you want versus what is feasible and affordable.