The Fuji will do just fine for street photography. I have used my Canon 50mm f1.8 quite a bit, the magnify works great. Focus peaking is ok but not needed, it does not work well, in my experience, with real shallow dof, magnifying is the way to go. Also with older manual lenses the focus distance usually on the barrel so you can preset distances, using the live view in the eyepiece I can do pretty well even without magnification. As with anything, practice will make it easier and more accurate. The Fuji high iso is wonderful.
Alan