Having it in the middle is O.K....it still works, but it's more effective to seperate them and have slow flow going through the fuge. You can split your drain line and have the main end drain into the skimmer section and the other end drain into the fuge...install a valve on the one to the fuge and adjust it so that 25% of your drain water is going through the fuge and the other 75% going through the skimmer. I trust in you research that you'll ultimately come to the conclusion that this is a very successful way to go, and it sounds like you have. As an added bonus it would allow you to issolate the fuge from the rest of the system in the event of a problem.