Multiplus 2 AC grounding off grid with generator

[Chuckster]

I have a victron multiplus 2. Going to use a eg4 powerpro 14.3 kw battery and occasionally top it off on cloudy days with a floating neutral generator connected to the AC input of the multiplus. The victron schematic clearly shows a ground going from the multiplus to the dc negative. I don't plan on grounding my panels. Can I take the AC output to a small main panel and bond the neutral and ground there to a ground rod? Will this complete my system grounding?