I think James is using the Blood Ketone meter, and yes, .6 is at the low end of nutritional ketosis, but that is OK for only 10 days.
DietDoctor posted two new talks by Steve Phinney, he covers the range of time for Keto-adaption in the Capetown talk. Much good info to help you on that website, first month free.
http://www.dietdoctor.com/low-carb-...stephen-phinney
This talk is really, really good and everything by Phinney and Volek on this site. Love the book you have, their Performance book would also be helpful for your goals.

As to how you feel, first be sure you are getting enough salt. He talks about it as well above, at least two cups salted broth. At 6’4”, it seems you are doing very well and don't need to lower carbs to lose weight/more ketosis as much as maybe gain muscle.