Why is it so hard to get good advice !!???
Too much? hell no. When I look at cams for stroker engines you really have to get into some larger grinds before you reach "too much". 258/260 is enough to have issues running power brakes, but it's far from too large. In fact, I'd like to see another .040-.060" lift on it with 1.5s. That helps spread out that lift and usually means less spring can be used. In a hydraulic roller that can be an advantage because they need so much spring anyway.