Yeah, those systems aren't perfect. If bedrooms are on one system and living spaces on another, the bedrooms can have a higher/lower setpoint during the day, and the other spaces can go higher/lower at night. If (as an example) you are an empty nester, then consider getting a mini-split heat pump for the master bedroom and disabling the central AC for the room.
Really though, if you have an all-electric kitchen and hot tub, you should consider going all heat pump for hot water and HVAC to ditch the gas bill entirely.
I would also look at some of the "DIY" battery options sooner rather than later; signaturesolar.com and diysolarforum.com are useful places to start. You could put in a 15kW/60kWh system for $28k. Or look at the Tesla powerwall.