With that bracket I would say 20inch. 25 might drag coming out of the hole shot when tilted up
I have 2 white 20hp efi's coming in any day now. Last 2 I'll get until next year. Was going to demo the white 20 on my boat and sell my 9.9 efi that's 3 years old now. Remote models.
Have a friend with a 20 efi for sale that's 3 years old.
Some options
9.9, 15 and 20 same weight, same profile fyi