Sounds like you have the ideal preperation done already. My ground school was based on the CBT so I expect SAS to be similar. If you can get hold of an FMC trainer, such as the ones used in add ons to flight sim, do so! Spending some spare time on this will help you out a little in the sim. Geeting to grips with the FMC is not essential as you really learn how to use this equipment on line but if you can familarise yourself before the sim then great.
Recent VFR flying, try flying a few ILSs on Flight Sim. Fly them raw data and this will also stand to you in the sim.
best of luck and enjoy it up there....at least it is getting warmer now!
rgds,
GP.