Trying to Make Window Stop Molding with My Router Table

Hi there:

I am trying to make a full set of window stop molding (about 120 LF) for a condo we own which is about 90 years old. The window stop molding holds the lower window sash in place. The existing molding is so beat up and broken it cannot be reused or repaired. Instead I would like to make new molding in a similar size and style as the original molding. However I cannot seem to find the right router bit for this project (perhaps I need two router bits and create the molding in two steps. Any input would be greatly appreciated. Pictures of the existing window stop molding are set forth below. The existing molding is 1/2” thick x 1 5/8” deep.