Great - that's really useful, thanks.
Hmm. Good point. I do do that a lot, especially as the field of view is so narrow! However, having read about all the problems people have with the handset, think I'll see if I can get used to using the app. I found this:
https://www.firstlightoptics.com/sky-watcher-mount-accessories/sky-watcher-synscan-wifi-adapter.html
which seems like it should attach to my current mount in place of a handset and would save money... but have just realised it is out of stock. Therefore think the in-stock AZ-GTe with "free" telescope is the one to go for. Very nice that that scope, is very different to my Mak. Thanks again for your help in finding a way forward. Will now have to consult the planning department for approval 😉