Well, thanks to Frank's call to reality photo, I believe White Innocence may be a wee bit too tall for my planned space. What a dilemma as I really like WI so I'm scouting for another location that would be a perfect fit for such a tall lass. All of which means I will be purchasing more peonies than originally planned (said no-one never).
I also like the hedge idea by SoCalGardenNut.
Thank you, everyone, for introducing me to so many lovely single white peonies.