Yep, those are the bentley specs. I removed, resealed, and reinstalled my oil pan in about 8 hours in the pouring rain (had a tarp). Not very fun. There are two tricky parts:
-getting the oil pan out - in order to do this you must move the steering rack out of the way which is doable but you'll have to continually move it back and forth as you're removing the oil pan.
- reinstalling the oil pump is *really* tricky, or was for me. There is a metal piece that slides into the pump and also into a tiny slot in the oil pan, and you can only do this while the oil pan is in place, but not bolted on. So you have to put part of the oil pump back in, then slide this metal shaft up into it, then put the oil pan back without breaking this shaft, then line up the holes without being able to see or feel it, then put the final nuts into the oil pump also without being able to see it...and if you drop the nut into the pan, well, you'll have to take it all down again. I tied the nut to my finger with a piece of string. keep in mind your hands are also covered in slick oil at this point.
definately doable, i'm a very much amateur mechanic, but tricky and will take some time. oh, and i assume you're taking it down to reseal it? if not, make sure you do reseal it...scrape the old gasket material off it (carefully without scratching it!) and put a new one on.