Only input I have is to make sure you have the flows and limitations down. So down, that you can run/recite anyone of them proficiently with no hesitations with the t.v. on and the ipod going. Or while taking a shower(this is my personal test for knowing if I have things learned or not). For me, it's hard to do without some kind of cockpit mockup, but try to at least get them straight in your head. The two days in front of the cockpit mockup and 2 days in the sim should be enough to get the hand motions down. The ground school, in my opinion, goes plenty slow enough that you can study that material as you go a long. They'll put on a facade of being laid back, and they are if you know your shiz. They'll help you out if you don't, but they'll obviously only go so far.
Be open minded to change certain things with your flying if needed. They're paying you to fly their plane and they're going to want you to fly it their way. Personal example, I don't/didn't care about cross radials on approaches, but they want you to use them. That wasn't a big deal to change for me.
I'd also use this time to polish up on the stuff you're SUPPOSED to know already as well. You probably won't have time to before the checkride. Main thing right now is those flows however.
What are you coming from if you don't mind me asking?