With freeflying it is not just the weight, but your whole body position. I myself am only a slightly heavier but used to be one of the fastest flyers on my DZ, because in fact my body is very aerodynamic. (thin, medium lenght, but lightweight, no extra baggage there ;-)
In Europe the trend is to have tight suits, with little drag to both arms, legs and the rest of the body. I even saw the use of spandex in the freefly suits. This means you have to specially fly on your legs and not on your arms. (which is a good thing)
You're problaby best of buying a not to baggy suit.
You could look at http://www.matter-airwear.com/ for some nice suits. But I am sure there are lots of other places where they tailer make suits for you.
However the tighter the suit the more difficult to learn.
Just buy several suits for several types of freefly skydives and levels of progression.
