In 2018 I did the first part of your Blue route but headed further South out of Assa before turning right on to the piste across to Tan Tan via Msied. Your route should be fine.How about this for a route, any one done it, I guess a fair bit of it will not be mettled road, but I don't know. Tafraoute to Tiglit not too far from Tan Tan via Assa I think...
Around Tan Tan make sure you STOP at any stop signs you come across, even if you can see it's clear. The police around there have a habit of hiding behind bushes and handing out 400dh fines to anyone who fails to stop at them.














