Currently:
-2 405W REC panels, mostly flat mounted on my trailer roof (2 more will be mounted eventually, might add more if I replace the roof mounted AC)
-MPP 3048LV-MK
-very small 20Ah battery pack made from 4 20Ah lifepo4 batteries I bought on Amazon to test the AIO without having to spend over $1k on cells, wiring, and BMS.
This is "stage two." Stage 3 is mount the other two panels I have. Stage 4 is build at 5kWh battery pack. Stage 5 is build a 15kWh battery pack for a totally bonkers for my trailer 20kWh total storage that I can backfeed into the house if power is out for multiple days to keep fridge, freezer, and heat going, if needed.