Very interesting thread, maybe admin can set up a dedicated forum "page" maybe under technical as there are a number of us looking at this option.
All things being equal I am collecting a rolling chassis plus gearbox next week as the basis of an electric build; a recent article in "Classic Land Rover" Aug 2022 made interesting reading for a Series one conversion which also retains original drive drain. Falcon Electric being used for components, the batteries there are "cells" that can be grouped together.
Another site in Australia has some interesting ideas
https://www.jauntmotors.com/vehicles
The battery location on yours looks better to me as its lower and does not infringe with an already small load space. At present I plan to use a series gearbox but possible with an Ashcroft High Ratio transfer conversion.
I am a time off yet need to rebuild a chassis and bulkhead but will put in provision for power steering, servo brakes and cooling which seems to be a possible issue.
The only other potential fly in the ointment is the DVLA but others have been exploring this as well.
Thanks to all contributors.