I don't think you will be happy with the wide flood beam. It probably wouldn't provide sufficient light in front. I would go with a 10 degree spot rather than flood. I was recently running twin 10 degree 20W spots, but switched to twin Philips "Energy Advantage" 8 degree 20W lamps which give me an effective 16 degrees spread.
Your yard light does look rather large and heavy. I'm using driving light housings from JCWhitney. You can get inexpensive MR16 spot and flood lamps at your local hardware store and experiment with them in the housing to see what you like best.
