Hi Mark,
A big thumbs up for your decision.
We are doing the exact same thing on our 42 ft Moody.
Our plans are:
18kW motor
Victron Inverter 5kW
LiFePO4 48Volt 600AH (3x200AH)
48 Volt Watermaker
DC DC for 12 Volt (Fridge, Instruments, Lights)
1600 Wp Sunpower Maxeon 3 (400Wp x 4)
Induction...