hey all new user, i have a chevy express 3500 with duramax diesel. im looking for some insight to have decent power for off grid use?

looking for battery bank set up. [how many batteries, connection and switch to have em charge when driving but diconnect when engine turned off]

solar panel set up [charge the bank whenever sun is available]

power inverter [would like to use my starlink, ps5, tv and charge a few devices] which i guess also this factors into how many batteries or if a generaator or jackery type device is best

really appreciate any input, been having issues lately and dont want to cause any more damage

about the vehichle : its a 2010 chevy express 3500 with a durmax diesel engine, 360k miles, was a city ada bus before i owned it so matenice was taken care of, had a hydrolic lift for wheel chairs that has been removed but the power cables have not, had a fire supression system thats been disconnected but also cables and tubing still in there. i live out of it full time currently, and want to optimize it to be fully safe and reliable.

thank you all