Someone just posted today the list of docs for their interview they had in Vientiane. It will not be to the payment window. You were asked to come the embassy?
Where are you applying? It is best to keep the 500k total simple to avoid requests for "additional statements with a clear final balance". Revolut is not accepted by all embassies.
Depends on where you apply some places like Malaysia require 6 months of seasoning, others 3 months and some are ok with a few minutes old deposit. Where are you applying?