The 3.28 degree glide slope depicted (suggested) is IIRC based on the idealized slope from FAF to touchdown, however, I'd need to look that up to refresh my memory.
It looks as though the approach need ~700 fpm ROD if GS is 180, ~580-600 FPM ROD if GS is 150.
I'm just a driver, not a rocket scientist but you might want to re-check those numbers for a 3.28 degree glide path.
