IMO, the current 55mm transmission chainline is a few mm too far to the "outside". You can see this because the chain isn't straight unless it's in the outermost/hardest gears. Supposedly solved by a twist in the lower puller; not really. In this case, you'd be fine going more inside. In other situations, you might not want to mess with it. Look at your bike to see how close to center your chainline is now and visualize what the impact of the new cranks would be. If things are shifting perfectly, I wouldn't mess with it.
