The ferry could be avoided by using a barge. After all, they ship oversize loads of vehicles and supplies to the island all the time.
My point was, if you have to dismantle the aircraft for a 1500 mile journey or just for the last 10 miles, it would be better to do it at home where you'll have some gear.
I went to grad school to in Phoenix, so I sort of know the topography, but I'm not familiar with Lake Pleasant.
I just checked the map and to my surprise, it isn't up north in the Flagstaff area. That should make things easier.
That
might mean.they won't have to cut it into bite size pieces.
With its deep hull, its hard to imagine a more difficult aircraft to ship overland.
I would imagine they are trying to avoid slicing it horizontally...I know the AMC Museum did that to get a C-124 to Dover (I saw the pieces while at Offutt)...I haven't seen the results up close to see if there are visible scars.
Similarly, the NMUSAF sliced up the XC-99 for its trip to Dayton. Seeing those pieces on the ramp outside the restoration shop wasn't pretty.

It looks like they can take roads through the desert and avoid the Phoenix area, I-10 and the overpasses enroute to Tucson.
But the further south they go, there are fewer roads through the desert. Eventually, you hit the Tucson area.
It would be fascinating to know their load size and route mapping program.
Even with Google Maps, it would be handy to have a helicopter...and perhaps a few Jeeps.