The idea of using the distributor is a curious one. However, you would need to ensure the timing of the pulse is very close to that of what is provided from the crank sensor. This is may or may not be difficult. You would need to disable the EZK from acting, (ie, timing or phase corrections) while you set base timing. I'm not sure if just setting to 16 deg BTC at idle is accurate enough or if the EZK will try and chase and adapt.
If you were to install a distributor, you need to establish a reference timing point. The crank arrangement is a fixed timing setup and the EZK box is designed to work with the parameter of the being timing fixed and known, so to speak. The distributor position or alignment would have to be well within the window for the spark contacts as well as the trigger pulses for the changeover to be successful.