Yep, I think that would be fine.
You could get a few other fish too, just can't get anything big as the width is only 12 inches and the fish would need room to turn around. LOL Corals in my opinion would grow great in that tank due to the depth. The only issue I can see is if you went with a canister filter the intake would be quite long and possibly be too close to the sandbed. A hang on filter like the aquaclear 110 or even the AC
70 has a long intake tube as well. I have an AC
70 in my 20L and the intake is only and inch or two from the bottom and the flow from the return of the filter makes quite the mess of my sand.
But these i guess are questions for another day.....