Can anyone give me some info (or point me to a web site) on the relationships between the total weight of a plane, wing loading, and max thrust? I'm going to build an electric plane (an E-SPAD, actually) and I want to be able to figure out if I have enough wing area and not too much weight for a given amout of thrust.

I'm assuming that max thrust needs to be greater (maybe much greater) than the weight to be able to get good vertical performance, and that the higher the wing loading is, the faster you'll have to fly to keep it in the air. Are there good "rules of thumb" for the relationships between these parameters? For example, looking at a Great Planes electric power system, they claim it produces 17 - 18 oz of thrust, and is recommended for planes up to 56oz in weight and with up to 20oz/ft^2 of wing loading...

Thanks!