Should I have solar panels installed on my house now, or should I wait for the technology to improve?

I live in Southern California, and I have been considering solar panels for some time. I’d love to air condition my house, but I’m not willing to do so until and unless we come up with an alternative energy source. I’m somewhat anxious to go ahead with the solar idea. It seems, though, that the technology is changing rapidly. I wonder if it would be smarter to wait.

What type of wiring is used between solar panels and their grid inverters or battery connections?

What should I use between the solar panel array and the battery shed on the ground? Also, what type of wire should I use to connect each of the panels? I know a lot of panels come with plug and play connectors but I understand a lot of people replace them with…something.

Is it expensive to install/set up solar panels?

I’ve looked at prices for individual solar panels, and they are pretty affordable. But that’s just the panel and I don’t know what else as for as labor and equipment it costs to install and hook up so that the panel actually powers other things like water heater or whatever. I know it probably depends on many factors but just give me an idea if you can. Thanks.

Can solar panels to heat pool be used for other household purposes?

Hi there, my father just bought a house that has solar panels on the roof to heat the water for his pool. The water goes through pipes by the panels and flows back into the pool. I was wondering if there is any way to use that solar energy for other areas of the house. The panels were put in when the house was built in the mid 80’s and the house is in Central Florida/E. Orlando.

Thanks in advance!