I got the idea from Doc Holladay here on the sight, but I had a Skinner ghost put on a CZ sxs.  The rear sight was too high for the factory bead and it shot high.  I talked to the guys at Skinner and sent the barrels to them.  I explained how I wanted it to shoot out to 40.  They knew about how high to mill an express-type front sight base with a brass bead on it.  It's perfect now.  I think if you put the ghost rear on, you'll just have to try it.  You might get lucky and a pipe front sight will be the proper height.  Skinner provided great service and the cost was reasonable.