Having done my IR and CPL on the DA42, I'd recommend making full use of the kit provided on the PFD. As already stated, the moving map will be no good to you on your test; however, the magenta track at the top of the PFD can never be removed (except in the event of both MFDs failing!).
The digital track readout is very accurate, and provided you use raw data as your primary reference (i.e. ADF needles), there's no reason that you shouldn't use it as an additional aid.
Why set out to make things harder for yourself?