It's a wonderful idea, Sharon and will surely be beautiful, too.
Isn't that Moonflower bush you pictured really a Datura, though? The real Moonflowers down here are white flowered vining/twining plants in the morning glory family. Just wanted to caution you if it is a Datura that all parts of the plant are poisonous, so be careful to guard it from any child or unsuspecting pet ingesting any part of it. In Utah where we used to live, they grow wild by the roadsides, and nary a summer goes by you don't hear of some dumb teenager getting high on the seeds and dying from the side effects. Down here, I grow its close relative, Brugmansia, but only inside my 6ft. fence where I can keep an eye on who goes near them.
