Sorry, my pugin is in french so I may not be using the right terms…
For the autoposting feature, there is at the moment several options :
– publish imediately
– minutes
– per hour
– twice a day
– one time per day
– weekly

My idea would be to add an option to publish :
– immediately
+ you can tell the plugin that you want that all the autoposted (not the reposts) article are reposted on the same day at a specific time (for example at 11PM).