log into you test site and set the options up from there put in the blogs id(this is the blogs id you want to be the default settings template.
it lists all you plugin settings and you just tick the ones you want it to remembers. you can apply the settings to existing blogs and set it up to that new blogs copy these settings to.
This looks interesting but I was wishing to create my own theme. And possibly use a plugin to change the theme for the device thus I can keep the same look throughout the website thanks il have a look into this to