http://kasbah-cigogne.com I took my parents over for a trip 4 years ago and we stayed here for a night.

I don't think anyone has fund away of putting Olaf onto an ipad, the maps kinda pre date tablets. But if you have a nav app that will run OSM maps they are pretty good, where they have pistes they are plotted more accurately than Olaf but Olaf has some which aren't in OSM mapping. Check out the navigation section of the forum for much more info on navigation apps etc.

Sticking to the south of the country will tick the boxes for photography and camping in the desert will hopefully give you a stunning sunset/sunrise. I'm sure you know by now that Morocco isn't overly blessed with the big sand seas most people picture but there are some. The 2 main ones are Erg Chebbi at Merzouga (end of MS6) and Erg Chegga near Mhamid off MS7/8.

Erg Chebbi is very popular with all types of tourists, Chegaga slightly less well visited.

Ouarazazate is doable on you arrival but you'll be getting used to a new vehicle and probably stopping for photos across the High Atlas so theres a good chance you'll lose daylight. Night driving is not ideal even you know the country, that 1 light coming towards you could be a moped or a lorry with a light out. Pedestrians, donkeys cyclist etc often have little road sense and no lights. Altogether it adds to quite a stressful time.

The more I think about the more I think if it was me I'd reverse the route. Go to Essaouira first have a couple of nights there, enjoy the medina, souks and ease into Morocco. The town is a popular tourist destination but much more laid back than some others.

I keep thinking of route suggestions but struggle to tick all the boxes inside a weeks trip. As first time visitors and photographers some things will take a little longer with soaking up the views and getting photos

Speaking of which, have a look at my flikr for some photos of my trips, they're tagged with the route reference from Morocco Overland and also geolocated to you can see where they were taken
https://www.flickr.com/photos/trackasylum/sets/