You want to be spot on ...but have no " noticeable " chain elongation?
The chain elongation affects your valve timing and your injection timing.... if you have not figured out your elongation and figure that into this whole deal then you will not be spot on with reference to the crank and or the valve timing....
I am all for you using this nice tool because I would like to do the same in the future... but it needs to actually be done correctly as compared to ' throwing ' this high tech tool at it while potentially ignoring the basic mechanical theory and application.