24ssv - how is the wake with 750's in back?

I currently have the 1150 in the front and 400's on either side of the engine. I think the wakeboarding wake is great with this setup but the surf wake needs help. I was thinking of putting in 750's in the back in place of the 400's so I have more corner weight for surfing but I'm worried it will screw up the wakeboarding wake. I usually ride at 22mph with 70ft of rope. I don't really like to go faster because the falls hurt a lot more and I'm old. Anobody know how the wake is and if it will get washy with 750's? Will need to go 24mph to get a good wakeboarding wake with the 750's (which I don't want to do either)?