I owned a UL 31 one of the first years they debuted. Speed was very respectable but it had a bit more jump than some of the other models on the market at the time. I am sure they improved on it some since then. Going by the IBO speed and your specs I would wager a speed around 274...without any string accessories attached.

If I remember the Phoenix lineup correctly they are a more parallel limb design and should prove to have less over recoil during the shot.