Sounds pretty good for a badly treated battery bank. I have used flooded batteries for decades now, but recently I changed over to SLA, one thing I found when running a 12 volt system with them was that they did not like to take a very high current. I have a 2500 watt panel setup but the best charge I ever saw going into the 12 volt bank was only around 1kw.
Since changing over to 24 volt we regularly see upwards of 1500 watts going in.
Our problem ( if it is a problem) is that we use very little from the batteries, usually only around 5% capacity each night, so our batteries are fully charge by around 10:30am. We use power in the afternoons to pump water, etc.
Still where we live we get a lot of foggy days and plenty of rainy ones, so it is good to have plenty of storage (660AH , 24 volt now)
We are in the process of dumping Gas usage, at the moment we have a gas stove and a backup Instant Gas hot water system.
We will be going to a small 2400 watt oven and an induction cooktop. As most of our cooking is done in the day time we should get free of gas with no problems. Our wood heater has a wetback and also the solar hot water system has a backup electric element too.
Pete