That looks too easy 
Anyway, it wasn’t boring. I have learned a few things. You should have probably mentioned you were using x64 version with JRE bundled, so one using x86 won’t be looking for Openfire in regular Program files, etc. Maybe i saw some other places to clarify, but nothing major. Good guide 
Btw, i see Xen being used for virtualization. That’s what Amazon uses?