Hi need some help with what inverter i need I have a ice cream van been running a 2kw machine for a year no problem using a cheap powerjack 8000w 13000 peak inverter which was in the van already.i bought a new 1.8 kw machine but the inverter is struggling to kick the compressor in now would a 3000w 6000 peak victron inverter be enough or would I be better getting the 5000w one considering victron is more efficient than cheap Chinese inverters