Connect 240V to 9V AC REF port?

That should work. The equipment list looks right as well.

Great then,I’m about to order…question tho…do all the iotawatt come with the 2 extra reference ports now? Or do I have to make sure I’m getting the 3 phase version or V5 or what?

There is only the newer V5 now which has the ability to use inputs 13 and 14 for either VT or CT. So what you have listed will accommodate 2 VTs.