Gridboss battery control

I've looked at most publications, and have watched many YouTube reviews, but have yet to learn if the Grid Boss is capable. I am looking to install a Grid Boss, along with 3 server rack batteries, and tie in my 8k auto start generator to my house panel, which has 200 Amp service (and many sub panels.) I don't have any solar yet, so no invertor for battery management duties. I was wondering if the Grid Boss can handle a situation where the grid has been down for a time and the batteries have become depleted. Can the Grid Boss turn on the generator and given sufficient output run the house load as well as charge the batteries back up? And if it gets to low can I black start this configuration?

1. Thanks,