EFI considerations for a 1970 383 with very mid cam

Hello all,
I am switching from an Edelbrock 650 to an efi.
Looking for some key considerations I need to be aware of when picking the efi system.
This is my first swap so any knowledge is better than whee I am now.

I have a new tank, inside tank fuel pump and feed / return lines - just need the efi.
Switching for easier starts and more reliability.

TIA
Dean