Don't know about the other but step 6-11 are easily achievable.
We did
-Samaquand to Korashina 1/2 day
-Korashina to Dushanbe 1 day
Dushanbe to Kylob 3/4 day (I would stay some where else though Kylob is awful)
-Kylob to Desh 1 day.
-Desh to Khorog 2 hours.
-Khorog to Murghab 1 day
-Murghab to Karakul 1/2 day.
The Parmir from Khorog to the Kyrg border post was very cold, we were snowed a couple of times. That was about 1 month ago.
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