That is the same inverter I have, and runs my Samsung RF18 without any issues.
Your install looks good, but I would completely seal off the top and side vents. Res frig is designed to use inside room air. It needs sufficient clearance to have the air flow over the condenser. Your manual should show and give limits for clearance.
I would recommend you have a firm bolting down or securing the frig. It needs to be mounted so it won't be able to vibrate out, or tip.