S2 Q&A: Some documents are still missing - submit now or wait?

Submit now if a deadline is today or the cohort is filling - a submitted application holds your place, and schools review once documents land; an unsubmitted one holds nothing. Then send the two must-haves within days - transcript (any version) and financial proof - because nothing is decided without them; official transcript, WES report and recommendations can follow after. Which document is the holdout?