The South's two main military strategies at the beginning of the Civil War were to preserve its small armies while doing enough damage to erode the Union's will to fight and to mass troops in northern Virginia and capture Washington, D.C., to force a quick Union surrender.
However, the first response you provided, which focuses on preserving armies and damaging the Union's resolve, is most closely aligned with the South's strategic approach overall. Therefore, it can be considered the primary strategy.