COS H4 and H4 EAD with future effective date

[AS09]

Currently my wife is in  F1 OPT STEM extension status which is going to be complete by JUNE 2019.We are planning to apply concurrent filling COS H4 and H4 ead with future effective date which is june 16th 2019(right after OPT ends), is that possible? can we expect USCIS approved both at same time and give us approved H4 and H4-EAD with given effective date?

Also we will apply Master's quota H1b next year(april 2019) if she get H1 approved and the last visa status will be granted right?
 

[JoeF]

The EAD will only be processed once she is in H4 status. So there will be a gap.