Realized that years ago. Only problem is with dual boot to windows, so be careful if you run that eternal sin of a system.
Usually run luks directly on disk. Sadly windows asked to initialize an unformatted disk when I added a new ssd and I clicked yes. Fortunately it just formatted the backup drive, but that could have been worse.
Cool build. Please be aware there is a reason that Sockets are made from a plastic that does not melt nor burn. Everything near power connections is a potential fire hazard.