The reason Elon Musk's company sells those battery storage subsystems is that our wonderful Sun, which has a lot of really positive qualities, doesn't stay in the sky 24/7. Without tracking, cells are at a fixed angle, and have a "sweet spot" centered (usually) around midday. The angle of the Sun also varies due to the time of year. OTOH, your situation sounds pretty close to ideal. The question is, always, whether your current monthly cost of electricity doesn't exceed the amortized cost of your solar installation -- and of course, your monthly cost of electricity will rise slightly over time. Electricity happens to be a gi-normous bargain, even with the various criminal enterprises enacted by the Demwits in order to enrich Al Gore et al.
Yeah, well under ideal conditions the electric bill is near about $150/month. And I almost forgot to mention that I was also planning to add a Power Wall UPS bank (13kWh) for starters though this is the most expensive add-on at $6,600 for the hardware alone.