My son had liver disease and couldn't digest fat bcus of the absence of bile...after 4 years of this (he was transplanted 6 months ago) I've became the queen of digestion while working with the Children's liver team and also a naturopathic doc.
1st: the only digestive enzyme my son was aloud to take was by Life Extension. Children's liver team did a study and the Life Extension is superior to all other enzymes (thought you may want to know that).
2. No fat can digest with out bile, with that much fat I hope you have a super healthy liver and gallbladder! I think you may be doing more harm than good, imo. Also your liver may not be able to even make enough bile to even digest that much fat at once. The enzymes may help digest fat a little, but it's the bile that really does the big work.
3. My son always had to take mct oil (modified coconut oil) whenever he ate fat to help it digest. I guess the mct helps it absorb in the small intestine (that's where all fat is absorbed).
4. your body is producing massive amounts of digestive enzymes until about 11am. After that it slows down, and so should your meals. You may want to double up on the enzymes if your going to be eating the fats after 11am. Also, take a digestive enzyme before bed even if you don't eat.
I'm not sure about the usp's but yeah 90g of butter is probably not a very smart idea. Your body is not designed to digest that much fat, you only have so much bile in there. Give your liver a break.