Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
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The original prototype version that debuted back in Computex 2017 had a 20mm fan. It's pretty clear as day that it's a different fan in this picture:
https://smallformfactor.net/news/silverstones-new-argon-ar11-49mm-lp-cooler
Having said that, my guess that this will not be as good as the C7...
Your answer can be found here (spreadsheet found on the SFF sub reddit):
docs.google.com/spreadsheets/d/1dzRY3LLsXcDX5Qt5PvQOrAJhw0EK9Cy7UtQPdyRp6PY/edit#gid=0
Look under column N (expansion slots). In short, you are SoL and will need to get an MATX case...the smallest being Silverstone's...
Page 14, section 7 of the user manual:
M.2 in the front supports NVME and SATA.
M.2 in the back supports NVME only.
Since you have a 960 Pro, it doesn't matter which one you put it in. However, if you have a NVME M.2 and a SATA M,2, then the NVME must go in the back while the SATA M.2 must go...