Or how about this combination...

Length: 3.80m
Beam: 2.0m
Sail area: 7.0sq.m (and maybe a 4.5 version for the beginners and/or smaller kids?) <img src="http://www.catsailor.com/forums/images/graemlins/cool.gif" alt="" />
Luff (P): 5.3 m
Mast (above top of beam): 6.0 m

"House prices have risen by nearly 25 percent over the past two years. Although speculative activity has increased in some areas, at a national level these price increases largely reflect strong economic fundamentals." – Ben Bernanke – 2005