[Wavery]

Kurt, are you saying 2/0 wire or 2G wire. Huge difference. 2/0 wire is about 0.6". 2G wire is 0.25". 2G is OK for about 700W. 2/0 wire is good for about 3000+W. I think that 2/0 wire won't even fit in the distribution blocks that you have.

It really isn't the size of the inverter that matters. It's the size of the load. You can have a 2000W inverter and run 700W on 2G wire. You would just have to remember not to exceed that (or use a 60A fuse). Just hate to see you buy a 300W inverter, only to upgrade to a 2000W later.

Are you aware that you can mount those batteries on their side and stack them? You can mount them in and configuration (I wouldn't recommend upside down). You could stand them on end, side-by-side.