Newbie advice: Bodyscale wireless

Hello everybody, I am totally new to the Arduino World.
I am here because I have a project on my mind, but I have some doubt.
Basically what I want to do is a kind of platform divided into 4 squares where each one is a balance, this is because I need to calculate in what percentage a person distributes the weight, on one leg and on the heel or forward and elaborate this data to find the center of gravity and other things..

Searching on the web I found this project : wi-fi-body-scale-with-arduino
I thought that it was enough to adapt this project for 4 balance instead of one...

But then I found that on the net there are also some projects with the nintendo wii balance board that is already designed to do this.

So my doubt is, what do you think is the best approach?
Thanks, BR