Not sure I agree about the ILS being displayed on the Nav screen. Because of your lack of practice, you want to KISS (Keep It Simple Sucker!). You have a GS and a Localiser displayed on your Primary Flight Display. Why try and scan over to another instrument? I would suggest leaving your Nav display on Nav and giving all your attention (apart from a scan over to EPR and a frequent quick look that the control wheel) to the PFD- it has all you need- ILS, Speed, Attitude, Flt Director, Altitude, Heading. Live in this instrument, print out a picture of it and put it by your bed- know it better than you know your girlfriend's face. Keep everything basic and as simple as possible or you will get swamped that much more easily- hence don't bother with FPV, not that the sim has one I think. I know you can put some very good information on the Nav display as Swept Wing advised, but I think your problem is possibly that you are getting swamped and overloaded with information already hence you are not seeing the aeroplane going out of trim, so I feel you would be better keeping it as simple as your previous types without such bells and whistles. A bit more practice and you would be ready to use them though- it would make all the difference.
Some other opinions on that would be interesting!