You say it needs to be timed. Is this because you checked the timing or merely because it hasn't been fired in a while? It could probably use a good cleaning and degunking as well. This can be accomplished by removing the stocks and spraying some gun cleaner into the frame through openings in the grip frame or trigger guard. Let the cleaner soak a while and then blow it out with compressed air followed by some oil for lubrication. Many times these old guns are gunked up from years sitting in a drawer and just need a good cleaning and oiling to function properly.
Much of this can be done at home without the expense of a gunsmith. If you are married, you may wish to perform these tasks in the basement or garage and not the kitchen. (No need to ask how I know this)
Just to clarify, your gun is old but not actually considered an antique by the BATF. Antiques are pre 1899 in the US.