Maybe a pic of your boat will help us think about it
I haven't seen much reason not to use the regular injectors
DNO SD276 VWGTD or stock DNO SD293 ~AKA DNO SD1930 in the states?
Timing will probably take some experimentation with your lower rev DI camplate unless you switched that. I'm told by a guy I know to give good advice that 12 degrees before top dead center as measured with a piezo timing light is a good starting point.