Both of the goldberg planes would do well in a large park and you can't go wrong with Carl Goldberg anything. Great company! They are both "speed 400" size which is a good "park flyer" size. They will handle a little wind much better than the aerobird. As a scale enthusist I'm glad you want to build up a scale fleet and with the ARF's these days you can do it without the time investment. I would however recommend staying with a high wing aircraft for now. High wing aircraft are more forgiving (they last longer). When you master ailerons and basic aerobatics then get a low wing aircraft and bore holes in the sky!

Mark