I must have missed the Ultegra brifter post....are they 7 or 8 speed? If 7, then you can use your existing wheels and 7 speed freewheel.
I only have six-speed in it now, and the LBS mechanic had reservations about bending the stays to widen the frame for a seven. Otherwise I would have put a new 7-speed freewheel with new Altus derailer on it, and could have used that 7/8/9 Ultegra brifter.
Has anyone bent those Sportour stays and is still riding it?