The following standards shall apply:
Minimum lot size: five acres, excluding area in access right-of-way and excluding the area lying within the bed of any adjacent public and approved private street.
Minimum frontage on an improved public street: 50 feet.
Minimum building envelope setback from any lot line: 50 feet.
Minimum lot width at the building line: 300 feet.
Minimum lot depth: 250 feet.