Power Assist Boost Factor - Setting

What would be a sensible Boost Factor setting for this setup?:

5kVA 48V Multiplus (EasySolar)
8x Rolls Series 5 210Ah(C20) AGM
750W AC Input limit (Honda EU10i 1kVA generator)
Power Assist ON

Am I right to think I could change the default factor 2.0 to 5.0?