Suggestion Starter system suggestion

I think EG4 has won me over but I am yet to pull the trigger on getting into solar.  However, I live in South Mississippi and see an entry that could entice me further, even though I am NOT sure it could be done.  As a resident in the Hot and Humid, air you wear, community the Mini-split seems to be a good investment.  My only issue is the HVAC system only seems to tie up a number of panels and Never adds to whole system if you expand later.  Is it possible to have a solar power pass-through? When condition (A) is met the Mini-split turns on and pulls the adequate amount of power (else) all extra passes on to a:
1- inverter 

2- Charge controller

3- Battery -- not sure that is possible w/o 2 or 1

Or is it possible to have a Charge controller that has the appropriate pass throughs to either feed the Battery if not feeding the HVAC?

This logically makes sense for an entry to solar system that allows for expansion and further integration.  Also this idea Hardens a home that could receive hurricanes and knock out power and MORE importantly HVAC (Katrina high 80s low 90s at night and NO POWER 2 weeks). Thoughts?