Traditional air venturi vs blower for spa

It's bagged up with a footer on two sides, tanning ledge on one side and pool on the other. The deck on the side is already bagged and filled. I don't want to destroy all the bagging work to run lines.
It's all good tho. I'll just have them move stuff around if needed. I also just realized that I'm running an 5" thick armrest on 3 sides of the spa. That will give me plenty of thickness to get the lines past one another. I think it's non-issue.
 
Then I would get the PBs input as what is possible given the current situation. They are responsible in the end.