Solar fun with(out) UPS (Grid tie?)

I bought this one:
https://aliexpress.com/item/Grid-Tie-Inverter-1000W-MPPT-function-Pure-Sine-Wave-110V-OR-220V-output-18V-Input-Micro/32609021348.html

i’ll pick up 5 or 6 of those 125watt solar panels for 40 a piece.
Saturday

I expect those to be working for about 85% because of the age of the panels (9 years).