I wouldn't replace the hubs just to replace the hubs, unless you want to spend money just to spend money. Repack and adjust them if they need it.
However, breaking spokes every 150 miles is not normal at all, and even needing to retrue that often is abnormal, unless you have very exacting standards of trueness (like 1 mm) or bash the bike around a lot. So a better way to spend some money, at least to me, might be to buy a Park TS2.2 truing stand and completely true and tension the wheels. You'll get a very useful tool out of it, and then you can correct any failings with the Crossrip wheels, build new wheels, etc - the tool and the gained skill will pay for itself in time.