When an edging idea is wide enough to serve as a path too, it doubles in value.
Terrific Idea to fix up that cinder block basement! - super cool! This idea might come in handy in the future.
Screening Option: A trellis could be added to the wooden planters on either the east side or south side with flowering evergreen vines, examples including Carolina Yellow Jessamine and/or Clematis armandii (see photos).