I have recently been designing and building my own planes. I usually start with a target wing span and area, however the overall weight comes out less than expected which gives a low wing loading. Although the planes fly well they tend to float more on landing approach, more than I would like anyway.

So I thought I'd work from a known wing loading and let that determine the area and therefore the span.

My question then is what is a good number (oz/sqft) to shot for, for a medium size sport type plane, is there a maximum? I'm more interested in all out speed than airbatics.