Wing loading of a model typically varies with the square root of model weight. I learned that here: http://jmquetin.free.fr/tips5e.htm

If you're interested in cubic wing loading, read this over on the aerodynamics forum:
http://www.rcuniverse.com/forum/What...1175842/tm.htm

Personally, I've concluded that even cubic wing loading is questionable. It is not a number that remains constant as scale increases. I have to do my home work to verify.

Nonetheless, it's interesting to consider.

Getting well beyond beginner here.