Good suggestion, I would love a pair of woundups, but not sure its worth sinking that much into this frame, I saw a CAAD9 frame and fork go for less than those on ebay last week! Maybe I should wait six months and see how much I like the frame. They do look great and seem to last well.
Could you squeeze onto 190mm steerer? Remember x2 is 35mm stack which is 5-7mm below average.
http://m.ebay.co.uk/itm/RARE-Wound-Up-Carbon-Road-X-Fork-40mm-1-Caliper-Brake-Steer-Tube-Blade-1-Inch-/231754780219?nav=SEARCH
I can assure you woundups ride beautifully.