Have a Generator??? If so, make sure your well pump circuit in hooked in to your emergency dist panel.

The well hole would have had to have been drilled with that dual purpose in mind as the workings of the electric pump are completely different than the manual. You'd pretty much have had to drill two separate shafts - one for the electric and one for the manual.

Probably have to get another shaft drilled for the manual pump. BUT - It's a great Idea to have the manual backup capability anyway. How far down is your current well drilled?