The Outback consistently gets great reviews. I am a fan of Ritchey bikes and their other products – and yours looks good!
Out of curiosity, do you find any issues with the exposed cable on the top tube? That seemed to be something identified as an issue by a couple of reviewers. Their specific issue was that it made mounting frame bags a challenge.

I am seriously considering getting this frame set and building up, and hence trying to learn as much as possible beforehand. Thanks!