From experience doing water analyisis, HCl solutions are less stable for a long time (HCl slowly evaporates so the concentration decreases) than solid sodium bicarbonate. Usually carbonate salts are used to determine the concentration of HCl since those can be acquired at a high purity.
Assuming you are evaluating a batch of unknown NaHCO3, your best bet is to standardize HCl first against a high purity carbonate salt and then titrate the sample with it.