If you guys are going to limit the Governor's 'veto-to-referendum' power to the final business period, which is the final 36 hours before the General election, then you only need to specify one timing for such a referendum, as it would always be initiated within a week of the General. So you could do "next election" or "next but one" but you only need to specify one timing. If you instead mean the Governor's power exists during a bill's final vote, then that should be worded in a way that does not invoke 'final business' and thus the SOAP-designated time period.
But we are putting the cart before the horse here, because Article III and Article IX contradict each other. Article III tells me the Governor's power to referendum things is very limited, while Article IX tells me it is absolute and unoverrideable. Which is it?