After a month of waiting, I finally got my 5'10" Sweet Potato yesterday. Installed my fins last night, now I am stoked!!! I got the board for a smokin deal from a very close friend who owns a surfshop that sells a lot of FW, so he gave me a smokin deal. Come to think of it, I got the front fins on clearance at a Hobie store and the rears on Ebay (they were a smokin deal because, even know the discription said they were FCS RTM fins, the picture was so blurry that you couldn't really tell, so I ended up getting $50 fins for $25 shipped/no tax!!).
I ended up with the FCS MRTRX fronts (blue) and FCS GXQ (red rears) as suggested by so many posters here. I know the fins don't match and maybe kind of weird to have a pair of CI logo fins on a FW, but oh well.
Here are some pictures: