just doing the same thing Holleth,
i have managed to find chestnut 1/2 round posts, at 2 pounds each for 6ft, and have spaced them at 3mts,
this will be used for goats and sheep, but will have a 3 inch top rail..goats like to stand up and look
then we will put two lines of top striking wire, helen does not want to use barbed,
for the straining posts, we have used 6-7 inch x 7ft posts and i have used the chestnuts as struts too
i did work out, you can ask 10 fencing contractors 1 question and get 10 different answers
one little tip…on the straining post, add a anti slip piece of wood..this will stop the post from turning