The specialized stem comes with several shims to change the angle so there maybe a taller one for your stem and you will probably need to lengthen at least the front brake cable to raise it any higher than current height. The lbs probably gave you the tallest one that would not require changing cables. The stem riser can be used so long as the forks steer tube(part the stem clamps to)is aluminum or steel and not carbon. Most of these are not that bad looking Dimension and Zoom are 2 that we use and come in black or silver and usually raise the bars about 75-80mm and there is room on the shaft to lower it if to high. If doing this make sure they install it with stem all the way up so the cables will be at max length and to lower will be something that you can do your self.