I'm doing the same things at the moment. you need a BMS with CAN bus that can talk to your Hybrid inverter and tell it things like SOC. I'm at the same point in the process as you however I have ordered batteries but not locked in the exact hybrid inverter yet, What model inverter do you have?
Has Anyone got experience building and connecting a grid tied Lifepo4? and connecting to a 230-250v grid tied inverter.
I have access to the wholesale price for my grid power. This has potential to vary between negative price (they pay you to use power) and occasionally extreme high prices...