Ok, false alarm. I see it now and it is just fine there, in fact that is what I meant when I said it should be plugged into the pump-to-tank circuit. Somehow I got the false impression from those first pics that the line was simply plumbed into the tank by itself and the braided discharge line went to another fitting, going back and looking at the first pics I can't see now where I got such an idea-sorry about that!
Looks like that thing is going to be a real beast, you did well!