Normally you'd want to play agressive AF with those hands preflop, yet the flop may make you fold the heck out. But about preflop strategy, I think a 5bb raise may do the trick... Why 5 and not 3? Well 3bb is kind of the normal raise, and with those hands you want to clear out any limper, as your pocket pairs are stronger if they go against one or two other players... A 5bb raise, on the other hand, will put the other players in a difficult position, they'll have to think carefully before paying, and you're not taking a huge risk as you would be taking if you were raising AI...
Obviously this depends on your stack, the moment of the tourney (if it is a touurney, as 5bb in a 1500 stack tourney in early levels would be a 100chips raise and many players would pay to see the flop for only 100c) and who you are facing in the table...