It's been a long time but I recall that waiting for the oil PX to rise before fuel-on was not a good idea as some of the engine bearings are sealed with bleed air which is not available at that time. If you crank too long oil gets throught the unpressurized bearings.
Therefore we only looked for oil PX rising after fuel on.
As for the autofeather, at our alpine company we used to arm it during approach in the early days but that was later rescinded due to the concerns written above (i.e. power application during approach arming the system and uneven power reduction causing an unwanted feather)