First, you mentioned near the end of Stage Five, "The Speedtest was upwards of 50 gpbs download".

50Gbps WAN link?? Please clarify if this is correct because if so, I am moving to your city.

Second, how did the client react to you through all this? Often clients are ignorant of who is at fault, they see you onsite working the issue and say "hey, why aren't YOU getting it done?". Did you have to deal with that much?