Re: any thing here look like it is built to fail?
If by "allow" you mean aluminum, by all means don't use it. Steel is the only way to go and it needs to be just a little heavier, thicker than what you have which looks to be about 1/8". I tend to build heavy but I'd probably go with 1/4" minimum. But that's me.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"