My Father used to tell me:
"son, the oats are always cheaper after the horse."
That inverter looks like about the cheapest oats you can buy...
I would recommend some additional research before making your purchase decision.
Here is some good info regarding inverter and battery sizing: https://www.solarpaneltalk.com/forum...-size-tutorial
As far as brand goes, I have purchased four Xantrex inverter so far and they have served me well.
Good luck with your project.