Looks as if all you left out is the wait time for some of the steps to complete
You can select more than 1 book to Send to Device MAIN (it is always this even if you have CC set to store on the SD Card)
1 Bigger send Batch is more efficient Job Wise
You don't need to Stop the Wireless connection if you don't want to. It will wait.
Just don't try and attach a wired device AND try to
connect wirelessly at the same time (Calibres 1 device at a time rule)