There are only 2 aftermarket distributors I would trust and neither the Moroso or the Distributor King units offer any performance imporvement over the stock one. If you want to upgrade the Ignition box and coil go ahead, but you may also gain little from this without some internal mod's.
My advice is to get a set of stock plugs, new NGK Blue wires (or Accel) and a cap and rotor from Honda. If this works on our race cars it will work for you.