I have also just completed my change out from the decade old Xantrex SW3012 to the new Victron Inverter/charger system.
Here’s what I went with...
Two Multiplus 3000 watt inverter/chargers
BMV 712 Battery monitor
CERBO GX controller and touch screen display.
The inverter/chargers are running in parallel in order to increase battery charge capacity. The CERBO GX controller is tied into my boats network providing always on internet access.
The impressive thing for me is that upon initial testing I was able to go from 50% SOC on my FLA house batteries to 80% SOC in two hours and ten minutes. That will help reduce generator run time for charging.
Here are some photos of the install. These are not the finished product, they were taken when I energized and configured the units. Yes i still had some wires to dress up whern the photos were taken.