Welcome to the Red Sea Reefer club? I have a 350 myself.
There are a number of different Tunze nanostream pumps so you'll have to be more specific about which model you are thinking about. I couldn't find anything on the Blu Wave Motion.
On my Reefer 350 I am using 2 Tunze Nanostream 6095 running about 47% max and they provide enough flow. Any higher and water will start to slosh out of the tank.
Check out my build thread in my signature and there is a long thread in the Red Sea section of ReefCentral where we share ideas, lots of pictures and how some of us modify our tanks - I use the ATO as a refugium -
http://www.reefcentral.com/forums/showthread.php?t=2458623&page=78