If you change the plugs it'll need two won't it? Take a good look at the colour of what comes out. If it's chocolate milkshake the water pump needs doing PDQ.
The note about the sump plug is spot on. Forget the torque wrench, it's a push with two fingers on a short spanner and then a tiny, tiny bit more if it drips.
If memory serves me, there is a second drain in the frame for the oil tank that really speeds it up. It won't take the full quantity of oil until it's run for a few seconds, so ignore the dipstick, measure it out and measure it in (use a plastic jug).
Enjoy your ride,