Tesla Motors Club

Just signed up for 4 of the new Powerwall 2. A lot I don't know, but appears not a lot of published info available so hopefully signing up will lead to an informed decision. Would really like to learn how to integrate these batteries.

Currently live totally off grid on the Big Island of Hawaii.
Current system is 48v based on Outback.
10kw PV
3 Flexmax 80 charge controllers
4 FX3048T inverter/chargers
12 Roll Surette 4vdc batteries - 48vdc 1350ah
2 diesel backup generators

Average daily use approx 28 kWh
Average daily PV production range 10-40 kWh/day depending on weather.
Batteries and base system approx 10 years old so I know replacement batteries are in my near future, hence my interest.

First concern is how do my PV connect to the Powerwall? Will I need a separate charge controller? If so, are my Outback CC compatible?

I assume that with depth of discharge I most likely will not need my Generators except emergency or extended low charging days. Can my generator be integrated? Would be great to never have to use, but comforting to have in beginning.

Is there a remote monitoring app?

Is there mo info/manuals etc available online?

Anyone aware how I can do a self install? Had to agree to installation to signup, but in reality I've been maintaining/updating this system myself since initial install. If I were to stick with present system, I'd be replacing the batteries myself.

Thanks for any input.

David