EJ253, subaru rs 2.5 plug replacement

I got some ir NGK plugs and gaskets for valve covers and had some simple questions.
1. Is NGK ir the best for this engine?
I know ir works great for coil-on-plug set-ups and I'm almost postivive mine is, but is NGK the best too.
2. Torque on the plugs?
What's the torque specs for this, I know it's very strange but I'm a stickler for these things and my cousin always taght me to use a very fine electronic torque wrench to measure the torque and tighten the perfect.
3. gasket cover bolt specs?
the torque, what is it? should I be worried?
4.Anything else I should change while I'm in there?
Its a bitch to get there, so any other basic keep-up I should do?

Thank you help appreciated, Reece :)