Your burger sounds great!! I can't see any picture though.
I just made smash burgers last night!! I feel bad, I've been neglecting my Kettles since I got a Blackstone griddle.
I did an (half azzed) experiment at a summer BBQ I had. I made 10 smash burgers on the Blackstone and 10 1/2lb burgers on the charcoal, just to see what would happen. I made one big batch of burger meat. The only difference was the weight, and how they were cooked. The guests seemed to want the smashburgers over the fire grilled ones!
I personally haven't decided if I like one over the other yet... it's a mood thing.