The Finnex fixture would be crazy high light and it would have to be suspended quite a bit above the tank. Even a Fugeray would be a ton of light.
You could get the el cheapo fixture like I've got on one of my tanks and it will handle low/media plants fine. Could also get a Double Bright fixture for even more lighting.
No matter what you decide, you'll be able to achieve high lighting (with CO2, ferts) for very little cost with such a shallow tank.