Well this is a semi repost, due to the place being mentioned before, minus the maps
I managed to farm about 3-4 primal fire an hour (afaik thats quite good) following this route, and yes it is a bodge up on paint
The greys netted me about 30g too, for an hour's work it isn't too bad considering Greens + Primals dropping
But the huge advantage is In general, this area is not as heavily overfarmed as other places, well atleast not on DraenorEU
Enjoy =]
Feel free to make a bot profile or something if you want for this route, its only needed for one quest and that quest isn't particularly long, also it is quite a large area so it's unlikely you'll be seen often