The torque setting for the cam covers is 9-11Nm. Additionally, the setting for the coil pack bolts is is 4-6 Nm. Be careful to avoid over tightening the coil pack/ spark plug cover, as the female inserts may spin inside the cam cover. I found someone had set a couple of mine too tight and taking them off was a minor problem. I ended up lifting up on the cover enough to wedge the insert tight enough to unscrew the bolt. One of the inserts simply popped out with the spark plug cover. I epoxied them back into the cam cover, so all in all a minor annoyance, but just be careful to go easy on those. The spark plug torque setting is 25-29 Nm. You don't have to take them out, but if you choose to, that is the setting. There is also a tightening sequence for the cam covers. Essentially you start with the inner two (inside the coil pack recess) and then move out alternately on the perimeter bolts from the centre to the ends.
You will probably want to replace the spark plug well seals at the same time, especially if you find any oil down there.
A dab of silicone where the timing cover meets the block ( top and bottom) is required. Just put a few light dabs inside the seal trough in the covers to hold it in place before you put them back on.
After finger tightening the bolts, I use a dentist's mirror and run it along the edges of the cover just to make sure the seal has not been folded over or pulled itself out of position before tightening to the torque setting. Not essential, but it gives a very good visual of the seal position where you otherwise can not see it.