If you are concerned about how the back will look, you might consider trying a "busy" fabric on the back, something a bit lighter weight as others have suggested, a print that will probably hide the quilting design.
That said, I also encourage you not to worry about the quilting "on the back" as that is a normal part of doing this work; there's not a way to actually hide it, so mostly we let it fall where it may.
Welcome here, by the way!
Jan in VA