Ended up with
1 mastervolt chargemaster 100A multi input voltage 50/60hz
1 mass sine 2500w. 24v to 230
1 mass sine 2500w 24 to 110
Installed new 110 circuit running only off the inverter
into kitchen salon
start batteries are 12 v and charged via the generator
only. I am thinking to change to 2 ( one for each engine compartment guest type marine
chargers 6 or 10 amp plugged into the 110 inverter supplied circuit. Ie charged off the house bank.
Not sure if I need to manually turn these off and on when required or if they can be left always on.
The alternators are 24 volt and the dc to dc chargers were 450$ each vs 75 for the guest.
Any other solutions?