BD,
The first trip through the explanation was confusing (my disclaimer will be its a bit too early yet) but the pictorial cleared things up. To address you question of the 660' issue, here are some suggestions.
Is there a map of the subdivision which shows the layout of the lots? If so, you could use the scale on the map (in addition to the lots with existing ponds) to lay out the 660'. If no map, do you know the depth of the existing lots and are the corners marked? Third would be to get a tape measure and mark off 660'. Lastly, you could mark off 100'on the road, count the number of paces it takes you to walk the 100' and then pace the property.
Russ
