On my 75g I did have a MP40, MP10 and a rio pump on it. With a Sicce3.0 for a return pump. Recently took the mp10 off though as most of my sps died in the partial crash and the tank just doesnt need that much flow now.
The 485 though is a whole other animal, since it is 2 closed loops and a main return for all the flow. At least initially it will be run by 3 Reeflos, 2x barracudas and a hammerhead.
The hammerhead will be on the on the main closed loop which will be attached to a Ocean motion
One Barracuda is the main return, with one sea swirl and the other is the second closed loop, which will have 2 more sea swirls. All in all it will move about 15k gph, although at first I wont run the 2nd closed loop. I made it so I can turn off each system completely if needed, and the 2nd loop will remain on standby until corals start to grow more, and more flow is needed.
Main goal of this flow system is to get as natural flow pattern as possible, and eliminate the need for other pumps stuck to the glass.
Tank will be some LPS, and nps as well as a wide variety of anthias, so natural flow will be important.