Although I doubt seasoned builders would have trouble with the SSD or front IO, a guide to that would help too. Also more pictures with close ups would be helpful too.
There is a 65mm version of the AXP100 Copper (with or without graphene coat) which would be 51mm without the fan. If semi-passive works out, that would be the heatsink I'd choose.
I'm very interested in the SM550 or 570, but I really want more benchmarks to be done regarding the passive cooling by others in the forum with various heatsinks. The 6L increase from the 550 to the 570 is quite significant.
Are the plugin boards with the CPU power out of stock?
Shipping isn't too expensive with flat rate... although I guess there's a chance of it getting lost!