Stephenvr

For a system this large and Bang for buck and simpler installation I would personally go for a high voltage system:
FoxESS 10.5kW IP65 High Voltage x2 ( Will handle those aircons like they not even there )
Fox ECS HV ECM2800, 16.59kWh ( 1x Master 5x Slave ) X2
And bonus is you can have your panels wired to 8 separate strings so can use all available roof orientations

We did the math in a previous thread. Sending around 3kw worth of power at 100V (approximately, it makes the math easy)  is 30 amps.
Off the top of my head, 25mm^2 has a resistance of 0.9Ω per km. You have to use the total distance (there and back), so for you it is 0.2km, or around 0.2Ω total. 30 amps over that is a 6V drop, or 6%. (Not counting the 6*30 = 180W of heat you'd be dissipating).
Maximum acceptable drop is 3%. So the cables needs about 2 times the capacity, so you're looking at 200m of 35mm^2 cable to even get at a remotely workable number. You don't want to know how much that is going to cost... you can buy a good inverter for the equivalent cost.
Two ways to go about this. The first is to forget about the Axpert and get a Infinisolar with high voltage DC inputs, so you can use thinner cable. The second is to use a grid-tied inverter and pass the power over the existing 230VAC wiring.
Tying all your panels in series will run them around 400V and a much more manageable 8 ampere or so, which again just using the square rule says now you can get away with 10mm^2, about a 1% drop (4V or so out of 400V), and a 30W heat dissipation.
Or buy a 3KW Fronius and with some software hackery, make the Axpert on the other end charge the batteries from AC during the day (so it essentially charges with the power generated by the Fronius).
Or skip the hackery and .... you know... get another inverter that already works well in such a setup :-)