It's a trade off......speed vs money

How fast do you want to do editing or design work?
If your looking for speed then the I7 is a better pick.
Do some reading about the software you will be using for these functions and see what the reqs are.

https://www.engadget.com/2016/11/14/macbook-pro-review-2016/
Note that part about needing a dongle to connect stuff.