Massive sub pumps or cut into return line for skimmer?

[Hustler]

from what i understand with this type of skimmer it will work with smaller pumps but the more you push through it the more it will pull out and thats why the big mother pump i ordered as this was a plus 6 skimmer so i got a pump to suit. That being said there must be some kind of minimum as per the size of skimmer... and this is where im lost