+1 for Tim's advise there is no safe way to derive split phase from grid 230 w/o an isolation transformer, you'll end up with a dead short from l2 to ground as soon as you ground your house wiring. So you will need to buy a good isolation transformer no matter what.
if it where me I'd go with
https://maximumsolar.online/product/pip11kw-max/ because I'm cheap, and so is it. I'd install it before the transformer and eat the transformer idle loss. this one will probably ship straight from Taiwan, but mpp ships dhl air freight, and it usually takes less that a week to anywhere in the usa.
if I was more concerned with idle consumption than cost, I'd get 2 sma 6048-us sunny islands, (these things are absolute TANKS hands down the best offgrid inverter on the market and have 25w idle) you can usually find them sub 3k each on ebay as new old stock and around 1500 used. I'd install these after the transformer. they have onboard battery chargers, but you'll need seperate solar charge controllers if you go this route. again low end is mppsolar or grow watt, high end midnite, outback etc.
if you want to be able to sell back solar overproduction (if you are even allowed to) then I'd go with a european style 230v hybrid inverter. (installed before transformer.)
low frequency tier 2 split phase inverters tend to be horribly inefficient vis-a-vis idle current, a real modern isolation transformer hooked up after a 230/240v inverter will probably be more efficient. you mentioned available to purchase in USA so I'll also mention, check ebay and craigslist for the transformer if you are buying stateside. they are usually readily available as industrial surplus for pennies on the dollar to what they sell for new. they are heavy so pay attention to where they're located or shipping will eat some of the savings. look for between 15 and 25kva.
