Original post is referring to grift 60, changing it to 65 would change the numbers definitely, not sure by how much since I haven't tested that yet.
Also, the aquila cuirass is down almost always because there's no way you can keep up 90 percent resources 247.
I tried the OP build,
http://www.d3planner.com/249045659. Added a Taeguk and turned on the TaegukSpammer. Yeah the bot cleared a 65 grift, but it died about 7 times. I swapped out the armor like you mentioned for forced armor. What's missing from this puzzle that prevents the character from dying