[Plugin: WP Super Cache] Serve same page to known and unknown users

I am fairly new to WordPress and WP Super Cache so I apologize if this is a stupid question or if it has been asked before. I maintain two small sites (combined they may get 50 visitors a month) and as such, various pages don’t see many visitors (for example, the “about” page). What I’m looking to basically do is cache that page once when I visit it, then keep displaying that cached version until I update the page.

A few things I have noticed while trying to accomplish this (correct me if any are wrong). I use PHP to serve cached files. I set Expire Time to 0 so files will not be deleted. I have Mobile Device Support turned on and a list of mobile user agents as specified by WPtouch. So far so good with the exception of the cached pages themselves. I am still not clear on the difference WP-Cache and WP-Super-Cache files, but, it seems that the cached file I create as a logged in user is not the same cached file that will be created by the first generic visitor to that page. So, the first visitor to that page will have to wait for the page to load (again, not many visitors to the site) when I would have liked to have already been the one to wait to create the cached version of that page.

I’m a bit sleepy so I apologize if I rambled and I hope that what I’m trying to accomplish makes sense. Thank you all-knowing WordPress and WP Super Cache users!

http://wordpress.org/extend/plugins/wp-super-cache/