I just bought a beautiful long bathroom mirror measuring 43" high and a single sconce for above it that measures 9.5" high. My cabinet vanity is 34.5" and there would be space between mirror and vanity of about 6". With all that said my light would be installed at about 93" high. Everywhere I read it says that lights above mirrors should be at 80" high. Is 93" too high? Should I get another sconce, say two flanking each side of the mirror instead?