One thing I started looking into, was the importer plugin. I have it currently installed, when I run it, it looks like there is a pull-down for selecting which import to run, however, it does not populate with any options (FYI). Can I write the git address for the SMF plugin below?
Sometimes npm api does not return anything to populate the list, will fix this soon - for now, you can just write nodebb-plugin-import-smf which will install the latest from the npm registry, if you want a specific fork or version, you can use the full git url, i.e. git://github.com/a5mith/nodebb-plugin-import-smf#master, basically any valid repository url
Also, if you install it once, or if you decide to manually clone it into the node_modules and you do not want the import plugin to touch it or try to install it again, there is an option "Skip Module Install" which you can check to skip the install process, but you still have to leave the name of the module in the input field, i.e. nodebb-plugin-import-smf