I was able to set up my new Khufu Sil for the first time yesterday. Here's the 1st pitch, in Alpine Green color. I set it up with one center pole (set at approx. 130mm). I'm 5'10" and had room at both ends, even though I had not guyed out the head/foot ends. This was just lying on the ground without a sleeping pad or bag. Sorry I can't offer more concrete info about the fit.
Edit: Barefoot Jake has a trip report in the Olympics just last week, using a yellow Sil Khufu with sustained rain. Here:
In the post "Forgotten Trail of the Elwha"
Also, I did buy the DPTE attachment for using two poles, but haven't used it yet.