Hi Richard
I think if we are a group of three we could get away with a single vehicle. Four would be too uncomfortable so we'd need two cars.
As for the length of the trip, I'm reasonably open minded. I'm happy to retain flexibility over much of the tour. The only thing I would ask is to please allow me that second night in Goba as a certainty since the wolves are my main reason for going on this trip.
I'm open to getting advice from operators as to where to stay and how to travel, be it camping or lodges. There was mention of a lodge closure at Dinsho. The advice I have had from bale mountains ecotours is that for Dinsho you can drive to Sodota campsite which is currently also very good area for wolves, even better than sanetti (allegedly). It's a 25km drive in a 4x4 from Dinsho hq. If there's no accommodation at Dinsho and we decide to do a camping option then this could potentially be a great option for the night we have there.
Also, I have a friend who currently works in Ethiopia and who has kindly offered to give me details of some wolf den sites. So hopefully we can get some really nice views of them.
I'm happy for us to decide as we go along where else we want to add time. My hope would be to extend time in areas that are productive for both birds and mammals, so Awash/Alideghe, possibly Harenna forest (if spotlighting is still feasible) and maybe around the lakes so we can cover Senkelle and the soda lakes Abijata shalla to see the flamingo spectacle.
This shouldn't take us any further out of the way than we currently have planned and would give us the potential to mop up targets (birds & mammals) that we might otherwise miss with a more challenging schedule. Plus it will allow us to have more dawn/dusk time at each site rather than constantly having to move on, increasing the chance to see nocturnal wildlife and be in the right place for dawn birding. I do really think that, where feasible, a couple of nights in each location is a sensible idea, especially where mist and fog can be an issues as it can be on the plateau.
I wouldn't want to commit to an extra 2-3 nights if it means cramming more remote sites in as I feel we are doing enough travel as it is (and from reading comments above it seems those ideas for the bustard & wheatear etc are a non-starter in any case).
Alternatively, if the rest of the group decide that 15 nights is preferable, you suggested previously that we might be able to finish up at Bale and my alternative plan was that I could add in a 2 -3 night hike in the area and so take the pressure off the rest of the group to accommodate my wishes. Extending the core trip would mean I would not have sufficient leave left to do this. So this would only be feasible with the 15 night option.
All the best
Jo