You didn't mention the sun exposure these plants will have.
Might try Juniperus chinensis 'Pfitzeriana' - Height 5 to 6 ft, Width 8
to 10 ft may be a problem depending on the size of your yard.
Moderately rapid growth rate. Sun only.
Also, Juniperus chinensis 'Sea Green' - Ht 4 to 6 ft, Wd 4 to 5' with
moderate growth rate. Sun only.
Or, Ilex crenata 'Hetzii' - Ht 5 to 6', Wd 6 to 8', and moderate to
rapid growth rate. Sun or shade.
Or, Ilex crenata 'Convexa' - Ht 5 to 6', Wd 5 to 6', and growth rate.
Sun or shade.
All suitable for Zone 5.