I would be honest and never tried by my self different sacrament level but I did talked with many Koreans with this build before this thread and other ones. From their experience and other people also from here confirmed, sacrament only worth one point as the damage that it would increase with more points (yes only your skill level) would only increase a bit of damage in one line of damage.
Aspersion is also based on your skill.
About spr, it was the classic before we discuss and test Int build. Before that when Daino doubled your lines of damage, Dex was the best , and I tried it. Without any good gear I was able to do CM 5 easily (now it is not so easy )