Thanks for the thoughts, but I think
@Mr_Brightside_@'s suggestion is the best option.
There are a lot of things I'd have to tweak and unlock to set up Airdropping - I read one of the links above or wherever.
Also, if the Bluetooth or Wi-Fi pukes you could lose data, but I think using a wired connection and iTunes are more reliable.
And
@Mr_Brightside_@ did show me a way to get a file transfer "headcount" and to basically confirm that all files got copied over, so he gets the prize this time! ;-)