Greetings all...enough with formalities and on with the obligatory question....

I'm building up a Fisher Rig with the Truvativ Stylo SS cranks and they use the Giga X (or whatever the name is) BB and integrated spindle. I'm pretty sure this gives a chainline of 49 mm. Would this pose a problem if I wanted to use a freewheel hub system, due to its limitied adjustability in terms of chainline? Can you space the freewheel out any? I want to order the Spot or Surly rear SS hub. Just want to make sure before I order the hubs and don't get stuck with something i can't use!
Thanks!