hot tent stove pipe question

[Chirogrow]

I got my stove when I bought the sawtooth 10 years ago and as my kids get bigger I decided to go with the seek outside 8 person tipi. The stove pipe does clear the top but I'm curious how much clearance is really needed out of the top of the tent. I assume the concern are the embers that come out the top and wanting them away from the tarp...
Any input would be great

 

[Back Country Hunter 2]

At @Davis Tent our rule of thumb was always 2' above the peak of the tent