Sounds like you're too far into the details here...
I have used MS flight sim for procedure and scan practice since IFR training. It has helped with checkrides, proficiency, and interview sim rides.
But you want to stick to the very basics...six pack and two VOR's (or an HSI and a VOR). Select an airplane with a similar display layout to the sim you expect to use. Give yourself ATC instructions and respond in full.
If you can fly procedures and tune the radios/VOR's in flight sim, you can probably do fine in a real simulator...it takes more of your attention to tune things on the PC than in the real sim, where you just reach down and turn the knob.