You would be better served by spending time on theory and really getting to grips with it (not just doing enough to pass the exams). I'm not implying that would be your approach but really understanding the theory does help with the practical stuff too.
Students that have spent a lot of time on PC simulators tend to be fixated on the instruments and it takes a long time to break the habit so I discourage it for my students. PC sims are great for radio nav practice but that is quite a way into the syllabus.
I too totally concur. I had spent hours and hours playing u$ FS and it took my poor instructors endless patience to get my eyes away from the instruments. I'll never forget the one who, in despair, put an A4 sheet before the instruments to force me to look outside. Which, by the way, makes an excellent exercise for any pilot (the A4 sheet, I mean).