Do I need additional corner support for this kitchen island?

I'm working on a kitchen island with this overall design. https://imgur.com/a/aeIPmIy

The bottom brace will use through hole mortise and tenon. I was planning on just doing a sort of dado/mortise and tenon on the apron. Will I need additional hardware like a standard table corner brace or will this be suitable? Or should I use a different joint to attach the apron to the legs?