Someone actually has kitted models in this size
This is budget RC's website. They produce models in the proportions that I am talking about here.
Here is a RCGroups review on this product. You can see by the spec's that it is just over the 150 sq. in. design criteria.
I was at the Propshop at lunchtime today and looked at these models. They are laser cut 1.9# EPP with all the plywood and CF components to make a complete model. All in all these are very nice kits at a very reasonable price ($35). They are AET aircraft.
But we are really on the cheap here and know that we can have this RTF for about that money. Plus it is just plane fun to design your own model.