I personally would let the eggs "rest" on the countertop for 12 hours before I incubated them. This will allow them to come to temperature gradually. I'm not positive it does any good, but it definitely won't hurt anything either.
Just so you know, many people prefer to leave eggs they know they are going to hatch on the counter rather than in the incubator because of the belief that the cold damages the embryo. On the other hand, there are many people on this forum who have successfully hatched eggs that had been in the refrigerator for a week or more.
Good luck