Im sorry for misleading the question or not beeing clear enough. I thought of this specc as a specc to use on all fights compared to the one with 2 points in precision. This was not a question on spinefight. I just wanted to state that I found the specc when researching the spine a while back. What o I wanted opinion on, was if its a gain or not to use 1 point precision with increased evis instead of 2 points and do other reforgings. Jasos clearified some though. Thanks for answers all of you.
The value of hit increases noticeably upon acquiring the legendaries. That should factor into your calculation of their relative worths, and the result will almost definitely be that the listed 2/3 precision spec is ideal.