Not sure it is the best idea to try to run a plugin “in” your theme like this – it won’t get updated as the plugin is updated.
You say you have “included all the files” from the plugin, but now you are trying to call admin-config.php with get_template_part when it is not a template – it should probably just be included.
Plus, this file looks like a config for an options framework, it probably does not actually create any output like the plugin admin page would. If you want output you will have to dig deeper into the plugin to see what creates that.