alright, so Ive Finally made up my mind on my overflow set up situation. I am going to cut out the top half of that back right overflow. I am however going to leave bottom 1/3 or so where the outlets are. I am going to put a sort of plastic gutter guard over the top of it, and that is where my little spray bar will extend from. Now above this little box will be my Tunze Wavebox. I think that will end up working nicely.
I'll have the two tunzes blowing in towards the center front pane, from the rear corners. Along with that wavebox, just lowing from right to left. That should give some nice flow, being pair up with a spray bar, using either some sort of larger cheap rio, or around a mag 7-12.