Yeah, turbo off and then oil cooler off, I can do it in about 40 minutes and I am no genius.
If the head is off, then the turbo is already off so yes, will save a bit of time.
I would check the oil cooler as a matter of course. I plan on doing mine as a yearly on major inspection form now on, had 3 discos now with same oil cooler issue and another sitting here that hasn't been looked at yet, so will wait and see on that one.

