I'm leaning towards lite and full whack app. I find freemium games far more frustrating than fun. I want to build a game I would play myself.
Re: comments on Marketing. It's not something I know much about at this stage. I have read though that game is only half the battle for a successful release. My research was really only based on what I could find directly from the games.
Those plugins are great but you really need to look at the waterfall breakdown of your site to really grasp where best to spend your time. The net panel in firebug can be amazingly helpful at showing you where blocking and latency is causing the most grief.
Even Faster is mostly JavaScript and image optimisations. Not quite the holy Grail of the first book but a good one to have in your collection none the less.