Luckily, the top edge of the tank is plastic, making it easily modifiable. Since I did not want to glue/silicone the stand/cover and the tank together to allow water to flow directly into the back chamber, I decided to go with this:
Now, water will flow over the crack between the tank and stand, without worrying about leakage. I can also direct flow to add a layer of floss to pre-filter the water going into the drain. I don't have to worry about overflowing the overflow box with the emergency drain either.
Few more pictures
I have yet to decide how I want to do the tank side overflow. I'm going to either drill a bunch of holes, dremel slats (comb style) or cut it out completely and silicone some egg crate in there.