A low idle will starve the head of oil... and cook yer' cam...
Too high,.. will just sound too high, and it might cost you an MPG or two if you idle a lot...
Er on the high side ... the low, loping, idle is a popular fad, but it ain't good fer' yer' bike...
This bike is okay,.. perhaps just a hair on the high side... but don't go a whole lot lower...