Why did the aluminum vs stainless thing get brought up? The Op didn't say anything about it. And it doesn't freakin matter.
Dan, my issue with that setup is that it's not "expandable" in the sense that you can't use a bigger pot on that burner. In fact you can't really use any other pot than that odd shaped one on that burner with those support arms on them.
That means you'll never be able to brew larger batches, and will always have to make sure your preboil volume isn't too much to risk boil over.
I have a cheap 30 dollar turkey frier with a simple flat stand like this,
And I used the 30 quart pot that it came with for years, but recently I upgraded to a 15 gallon restaurant kettle, and I didn't have to replace the burner in order to use it.
I would look for a more traditional designed turkey fryer, because you're going to be boxed it by that styles fafety features if you want to expand.
Or if you want to try other things on there.
Here's my setup
And here's us using the same style burner to make Brochet (15th century Burnt honey mead) in a dutch oven on the burner.
You can't really do that easily on the burner you're looking at.