Do not use QFE if your aircraft is not pin-programmed for it. Do not switch of EGPWS, it is your life-saver in IMC.
Use QNH below TL: PF will set cleared ALT according to JEPP (or other) Approach plate table (on JEPP the NON-bracketed Altitudes) and your PNF will crosscheck for correctness.
Not rocket science.
