Just for interest sake, Sunsynk inverters' MPPTs are over-specked. The 5kw inverter does 6,500w (2x 3,250w) solar, the 8kw inverter does 10,400w (2x 5,400w). Then there are the 3 phase models...
Over sizing of solar strings are also not a bad thing (volts MUST however be within limitations)...