Solar system questions

[Xavierp]

First time liveaboard on our newly purchased 2011 SO 409.

No generator onboard
Small fridge
AC
Eventually, water maker.

I’m sure I forget things I’ll need.
But based in your experience what do you think is a good starting point?
I would preferably like a system I can expend. Does it mean a “strong” inverter and then upgrade the panels as technology improves?..

I understand I’ll need at least 800 w, or more if I can afford.
What panel brands are standard and reliable?

Then I’ll need an inverter. 2000 w right?
Any brand?

Batteries….

Thx!