do both.. :)
I usually put it on.. .. obviously cold. torque it. run it 15m, torque it.. run it another 30m.. let it set and torque it.. then maybee 1 more time the next day after running it again.
mind you.. I'm doing the OHV jobs now.. not N's.. andd I'm pulling the VC off to check valves too..
retorquing don't hurt. might help. :) that's a win-win