It is too subjective to answer, in that what person finds twitchy at 58 mm is another's stable. I have always seen "neutral steer" defined as 55-60, so I wouldn't think going to your 45 rake 56 trail would be too risque.

I screwed up my winter build, and mentally swapped my STA and HTA. Instead of my planned 56 mm, I am going to be at 65mm. I expect to see some difference.