If you're doing a TR with an airline, I would prefer the CC, which helps you understanding the systems. The MRG is somewhat influenced by the airline Pat is working for and their SOPs might interfere with your airline standards... So I would stick with your airlines OM B for procedures and the CC and OM B for system.
N1
BTW: Pat's work is very helpful and nicely done, no question about that! Might help a lot, if you're looking for a "different approach" or a second opinion on your SOPs or Boeing's way to do it.