Good photos TonyC and congratulations on putting the effort in and completing the task.
My OH flies model helicopters and planes and have had excellent results with a spy camera. Also one of his mates is a professional photogrpher done by helicopters for projects - for eg new highways etc or inside buildings.
My OH made him a part that is fitted below the heli and can be rotated by a portable computer to whatever angle you wish to take. Works very well too. I also do the end results for him - print the photos and one was 2.5 M long of a panaroma one of Chritchurch stitched together. Looks fantastic.
Unfortunately with going blind a year ago have been unable to use the printer but with getting a little sight back will be into it again fairly soon hopefully.
All the best for your project too and you have beautiful scenery where you live.