if I might add an opinion...
forget the SS bale and cheek block. Wrap a high tech line around the mast at the level of the bale and tie off each end in a small hole in the sail track (forward, so as to not mess with the luff rope). before tying it off, put a small block (29mm harken carbo block) on the line with the line running through the center of the block. Tie the top of the block to a pig tail from an eye higher up the mast.
This eliminates the SS bale and decreases weight.
Of course you may have only been showing that picture as a reference point and plan on doing it this way anyway.