I got cooler and NVMe this weekend. I picked ID-Cooling IS-60 EVO: removed original fans and put only one Arctic P12 in pull mode, replaced backplate with one from "be quiet!" (since low pressure is the issue with original mount). This is how "weaponized" motherboard looks like - I might remove M2 cover in future. Time for more cutting - rough cut for IO. After filling hole, threading in standoffs and cleaning aluminum dust. Motherboard fixed in place for the time, this time without cardboard I had to remove IO shield. It extends beyond motherboard on one side. I didn't want to cut it for warranty reasons.