This roof line is exactly what we are thinking. You could do regular dormer on the one end or a shed dormer like this picture shows. This would save building side walls plus give you the steep roofline and that always looks better.
Fieldstone Facade A stone-floor porch with arches and white Tuscan columns stretches along the front of this ranch-style home. The multilevel patio with curving fieldstone eases the transition between the side entry and an outdoor play area (not shown). Copper shed roofs below the gables and transom windows offer stylish protection from the rain.