The way you have it wired is exactly how I have my multiple SCCs wired And I have used mine for 18 months. Circuit breaker before the SCC for each different array. The circuit breaker may not be necessary but certainly makes trouble shooting easy and also before the battery is shut off, the Solar power can be removed just like the SCC instructions say.
We both could use some over current protection between the SCC and the busbar.
Other than that, works fine. I had two different sized Victron Devices, so I had to manually enter the battery settings in SCC #2. I could not load a saved profile from a different type SCC. I have my SCCs in Victron’s virtual network. I don’t really know what that does, there’s not a lot of documentation, but if I change settings in one, I will get a message from the other about mismatched settings. Also, when I still had flooded lead acid, when I put one SCC to equalize, the other three entered equalize.
EDIT: Mentioning this because I saw your sticker. For the couple of times I’ve hooked to shore power, I used the solar power for all the DC needs. I never turned the converter on. I have my inverter AC power hardwired from the inverter. If I hook to shore power, I continue to charge with the solar panels and use DC from there.