Re:
Yeah just (carefully) cut down standard grips if you feel they're too big.
You could just leave them normal length and simply chop off the very end, or fit them and (gently) tap the ends with a soft hammer (nylon hammer?), end of the bars will act like a cookie cutter and take off only what you don't need.
Or you could use Grip Shit grips, as they have no end caps and are shorter than regular grips.