The Davis et. al. paper below should of of interest to both the tropical cyclone winds and the tropical cyclone intial conditions projects. The study used the HRW WRF to perform 69 pairs of simulations for a total of 10 Atlantic tropical cyclones using an ensemble Kalman filter initialization. They noted that with just a few exceptions, that using high-resolution forecasts performed as well as, or significantly better than, the coarse-resolution forecasts of hurricane intensity and structure.
Davis, Christopher, Wei Wang, Jimy Dudhia, Ryan Torn, 2010: Does Increased Horizontal Resolution Improve Hurricane Wind Forecasts?. Wea. Forecasting, 25, 1826–1841