PowerShare and SPAN Panel versus new 225 panel and sub panel

I recently upgraded my solar to an EG4 18K hybrid inverter and am adding a backup battery pack which requires a new 225 panel and sub panel. I am also awaiting the CT Foundation with the PowerShare feature. Tesla already approved me for the PowerShare with my existing system, but I am worried the upcoming changes will make it harder...but am hoping going with SPAN for the new panel will make it easier. Should I go basic on the 225 panel and sub panel or go for the SPAN?

Please share some...

PowerShare and SPAN Panel versus new 225 panel and sub panel