I've interested in solar and batteries but unfortunately the return would be too long for us if we hired a contractor and I'm not confident in my own skills to

I've interested in solar and batteries but unfortunately the return would be too long for us if we hired a contractor and I'm not confident in my own skills to pull it off correctly. Mostly I want an easy whole home battery just for some arbitrage. Our rate plan has a 4 hour peak period of $0.27/kwh vs $0.14/kwh off peak. Of course the peak time is when we actually want to use a lot of energy running our AC and other appliances. Unfortunately I haven't found any DIY stand alone battery systems that offer the simple scheduling I need since most seem to be only backup systems.