I'd drop a line to Ibby @ Headstock distribution...
It would be tempting to move each saddle block 5mm forward!
Not a fan of the Mono rail look, underdstand for a 5 for Fan Fret...
But on a std 4 nothing to be gained, if not bang on with gaps can look odd...
Would a std 4 bridge, in the right place cover all the holes, although the SR bridges are usually sunk in to the body.